View source for Dacian language

{{Short description|Extinct Indo-European language of the Carpathian region}}
{{Use dmy dates|date=March 2020}}
{{Use British English|date=October 2012}}
{{Infobox language
| name             = Dacian
| states           = [[Dacia]]
| ethnicity        = [[Dacians]]
| extinct          = 6th century AD<ref>{{cite web|url=http://multitree.org/codes/xdc |archive-url=https://archive.today/20141230224410/http://multitree.org/codes/xdc |url-status=dead |archive-date=30 December 2014 |title=Dacian |access-date=2024-01-29 }}</ref>
| ref              = 
| familycolor      = Indo-European
| fam2             = [[Daco-Thracian]] (?)
| fam3             = 
| fam4             = 
| iso3             = xdc
| linglist         = xdc
| glotto           = daci1234
| glottorefname    = Dacian
| script           = [[Latin alphabet|Latin]], [[Greek alphabet|Greek]] (limited use)
| region           = modern-day [[Romania]], northern [[Bulgaria]], eastern [[Serbia]]; [[Moldova]], southwestern [[Ukraine]], southeastern [[Slovakia]], southern [[Poland]], northeastern [[Hungary]]
}}
{{Indo-European topics}}

'''Dacian''' ({{IPAc-en|'|d|ei|sh|@|n}}) is an extinct language generally believed to be a member of the [[Indo-European languages|Indo-European language family]] that was spoken in the ancient region of [[Dacia]].

The Dacian language is poorly documented. Unlike [[Phrygian language|Phrygian]], which is documented by c. 200 inscriptions, only one Dacian inscription is believed to have survived.{{sfn|Asenova|1999|p=212}}{{sfn|Nandris|1976|p=730}} The [[List of Dacian plant names|Dacian names for a number of medicinal plants and herbs]] may survive in ancient literary texts,{{sfn|Dioscorides}}{{sfn|Pseudo-Apuleius}} including about 60 plant-names in [[Dioscorides]].{{sfn|Price|1998|p=120}} About 1,150 personal names{{sfn|Nandris|1976|p=730}}{{sfn|Petrescu-Dîmbovița|1978|p=130}} and 900 [[toponyms]] may also be of Dacian origin.{{sfn|Nandris|1976|p=730}} A few hundred words in modern [[Romanian language|Romanian]] and [[Albanian language|Albanian]] may have originated in ancient Balkan languages such as Dacian (see [[List of Romanian words of possible Dacian origin]]). Linguists have reconstructed about 100 [[List of reconstructed Dacian words|Dacian words from placenames]] using established techniques of [[comparative linguistics]], although only 20–25 such reconstructions had achieved wide acceptance by 1982.{{sfn|Polomé|1982|p=872}}

==Origin==
There is scholarly consensus that Dacian was a member of the [[Indo-European language|Indo-European family of languages]]. These descended, according to the two leading theories of the expansion of IE languages, from a [[proto-Indo-European]] (PIE) language that originated in an [[urheimat]] ("original homeland") in the southern Ukraine/ Caucasus region ([[Kurgan hypothesis]]) or in central [[Anatolia]] ([[Anatolian hypothesis]]). According to both theories, Indo-European reached the Carpathian region no later than c. 2500&nbsp;BC.{{sfn|Renfrew|1987|p=149 (map)}}{{sfn|Mallory|1989|pp=107, 109}}

According to one scenario, proto-Thracian populations emerged during the [[Bronze Age]] from the fusion of the indigenous [[Eneolithic|Eneolithic (Chalcolithic)]] population with the intruders of the transitional [[Indo-Europeanization Period]].{{sfn|Dumitrescu|Bolomey|Mogosanu|1982|p=53}}{{sfn|Hoddinott|1989|p=52}} From these proto-Thracians, in the [[Iron Age]], developed the Dacians / North Thracians of the [[Danubian-Carpathian Area]] on the one hand and the Thracians of the eastern [[Balkan Peninsula]] on the other.{{sfn|Dumitrescu|Bolomey|Mogosanu|1982|p=53}}{{sfn|Hoddinott|1989|p=52}}

According to Georgiev, the Dacian language was spread south of the Danube by tribes from Carpathia, who reached the central Balkans in the period 2000–1000 BC, with further movements (e.g., the [[Triballi]] tribe) after 1000&nbsp;BC, until c. 300&nbsp;BC.{{sfn|Georgiev|1977|p=287}} According to the ancient geographer [[Strabo]], Daco-Moesian was further spread into [[Asia Minor]] in the form of [[Mysian language|Mysian]] by a migration of the [[Moesi]] people; Strabo asserts that Moesi and Mysi were variants of the same name.{{sfn|Strabo|loc=VII.3.2}}

== Linguistic classification ==
Dacian was an [[Indo-European language]] (IE). Russu (1967, 1969 and 1970) suggested that its phonological system, and therefore that of its presumed Thraco-Dacian parent-language, was relatively close to the primitive IE system.{{sfn|Vraciu|1974|p=283}}

While there is general agreement among scholars that Dacian was an [[Indo-European language]], there are divergent opinions about its place within the IE family:
* Dacian and the extinct [[Thracian language]] were members of a single [[dialect continuum]]; e.g., {{harvp|Baldi|1983}} and {{harvp|Trask|2000}}.
* Dacian was a language distinct from Thracian but closely related to it, belonging to the same branch of the Indo-European family (a "[[Thraco-Dacian]]", or "Daco-Thracian" branch has been theorised by some linguists).{{sfn|Edwards|Gadd|Hammond|1971|p=[https://archive.org/details/cambridgeancient1971edwa/page/840 840]}}
* Dacian, Thracian, the [[Baltic languages]] (Duridanov also adds [[Pelasgian]]) formed a distinct branch of Indo-European, e.g., Schall (1974), Duridanov (1976), Radulescu (1987) and Mayer (1996).<ref name="Schall H. 1974">Schall H., Sudbalten und Daker. Vater der Lettoslawen. In:Primus congressus studiorum thracicorum. Thracia II. Serdicae, 1974, S. 304, 308, 310</ref><ref>[http://www.kroraina.com/thrac_lang/thrac_9.html The Language of the Thracians, Ivan Duridanov, 2.9 Thracian and Illyrian]</ref>{{sfn|Rădulescu|1987}}{{sfn|Mayer|1996}}
* Daco-[[Moesi]]an was the ancestor of [[Albanian language|Albanian]], belonging to a branch other than Thracian, but closely related to Thracian and distinct from [[Illyrian language|Illyrian]]. Proposed by [[Vladimir I. Georgiev|Georgiev]] (1977),{{sfn|Georgiev|1977|pp=132, 183, 192, 204, 282}} this view has not gained wide acceptance among scholars and is rejected by most linguists, who consider that Albanian belongs to the [[Illyrian language|Illyrian]] branch of IE,{{sfn|Lloshi|1999|p=283}} either as a direct descendant or as a sister language.<ref>{{harvnb|Friedman|2020|p=388}}; {{harvnb|Friedman|2022}}.</ref>

Several linguists classify Dacian as a ''[[satem]]'' IE language: Russu,{{sfn|Polomé|1982|p=878}} Rădulescu,{{sfn|Rădulescu|1987|p=243}} Katičić and Križman.{{sfn|Katičić|Križman|1976|p=150}} In Crossland's opinion (1982), both Thracian and Dacian feature one of the main satem characteristics, the change of Indo-European *'''k''' and *'''g''' to '''s''' and '''z'''. But the other characteristic satem changes are doubtful in Thracian and are not evidenced in Dacian.{{sfn|Crossland|1982|p=848}} In any case, the satem/centum distinction, once regarded as a fundamental division between IE languages, is no longer considered as important in [[historical linguistics]] by mainstream scholars.{{sfn|Renfrew|1990|p=190}} It is now recognised that it is only one of many [[isogloss]]es in the IE zone; that languages can exhibit both types at the same time, and that these may change over time within a particular language.{{sfn|Renfrew|1990|p=190}} There is much controversy about the place of Dacian in the IE evolutionary tree. According to a dated view, Dacian derived from a Daco-Thraco-Phrygian (or "Paleo-Balkan") branch of IE. Today, [[Phrygian language|Phrygian]] is no longer widely seen as linked in this way to Dacian and Thracian.{{sfn|Polomé|1982|p=888}}

In contrast, the hypothesis of a Thraco-Dacian or Daco-Thracian branch of IE, indicating a close link between the Thracian and Dacian languages, has numerous adherents, including Russu 1967,{{sfn|Rădulescu|1987|p=243}} [[Georg Solta]] 1980,{{sfn|Rosetti|1982|p=5}} Vraciu 1980,{{efn|{{harvnb|Rădulescu|1984|p=85}}: "Russu's conviction about the existence of a 'Thraco-Dacian Language', shared by Crossland and by Vraciu (1980) and the reservations expressed by Polomé and Katicic (see above) are thus fully justified"}} Crossland 1982,{{efn|{{harvnb|Crossland|1982|p=838}}: "V. I. Georgiev (1977) has claimed in addition that names from the Dacian and Mysian areas approximately Roman Dacia and Moesia) show different and generally less extensive changes in Indo-European consonants and vowels than do those found in Thrace itself. The evidence seems to indicate divergence of a 'Thraco-Dacian' language into northern and southern groups of dialects, not so different as to rank as separate languages, with the development of special tendencies in word formation and of certain secondary phonetic features in each group"}} Rădulescu 1984,{{efn|{{harvnb|Rădulescu|1984|p=85}}: "Georgiev had the merit to state that Daco-Moesian possesses a certain degree of dialectal individuality, but the data presented here clearly label as wrong any theory which claims a more profound separation between Daco-Moesian and Thracian proper, even if Daco-Moesian proves to be more closely related to Illyrian than to Thracian or, as it seems more likely to be the case, if we will eventually have to conclude that we deal with three different dialects of the same language"}} 1987.{{efn|{{harvnb|Rădulescu|1987|p=243}}: "Russu defended two important theses: 1) the close relationship between Daco-Moesian and Thracian (the title of his book is The language of the Thraco- Dacians), and 2) the nonexistence of a "consonantal shift" in Thracian, contrasting it with Daco-Mysian, firmly supporting the position that, in both dialects, the IE *MA and M merged into M and the *T remained unmodified"}} Mihailov (2008) and Trask 2000.{{efn|{{harvnb|Trask|2000|p=343}}: "...Thracian An extinct and poorly known Indo-European language of ancient Bulgaria and Romania. Its slightly distinct northern variety is sometimes distinguished as Dacian, in which case the label Daco-Thracian is applied to the whole complex ..."}} The Daco-Thracian theory is ultimately based on the testimony of several Greco-Roman authors: most notably the Roman imperial-era historian and geographer Strabo, who states that the Dacians, [[Getae]], Moesians and Thracians all spoke the same language.{{sfn|Strabo|loc=VII.3.2, 3.13}} [[Herodotus]] states that "the Getae are the bravest and the most just amongst the Thracians", linking the Getae with the Thracians.{{sfn|Mihailov|2008|p=598}} Some scholars also see support for a close link between the Thracian and Dacian languages in the works of [[Cassius Dio]], [[Trogus Pompeius]], [[Appian]] and [[Pliny the Elder]].{{sfn|Bolovan|Constantiniu|Michelson|Pop|1997|p=10}}

But the Daco-Thracian theory has been challenged since the 1960s by the Bulgarian linguist [[Vladimir I. Georgiev]] and his followers. Georgiev argues, on phonetic, lexical and toponymic grounds, that Thracian, Dacian and Phrygian were completely different languages, each a separate branch of IE, and that no Daco-Thraco-Phrygian or Daco-Thracian branches of IE ever existed.{{sfn|Georgiev|1977|p=282}} Georgiev argues that the distance between Dacian and Thracian was approximately the same as that between the [[Armenian language|Armenian]] and [[Persian language|Persian]] languages,{{sfn|Georgiev|1977|p=298}} which are completely different languages. In elaborating the phonology of Dacian, Georgiev uses plant-names attested to in Dioscorides and Pseudo-Apuleius, ascertaining their literal meanings, and hence their etymology, using the Greek translations provided by those authors. The phonology of Dacian produced in this way is very different from that of Thracian; the vowel change IE *o > *a recurs and the k-sounds undergo the changes characteristic of the satem languages. For the phonology of Thracian, Georgiev uses the principle that an intelligible placename in a modern language is likely to be a translation of an ancient name.{{sfn|Poultney|1968|p=338}}

Georgiev (1977) also argues that the modern Albanian language is descended from Dacian, specifically from what he called Daco-Moesian or Daco-Mysian, the Moesian dialect of Dacian,{{sfn|Georgiev|1977|p=283}} but this view has not gained wide acceptance among scholars and is rejected by most linguists, who consider that Albanian belongs to the [[Illyrian language|Illyrian]] branch of IE.{{sfn|Lloshi|1999|p=283}} Polomé accepts the view that Albanian is descended from Illyrian but considers the evidence inconclusive.{{sfn|Polomé|1982|p=888}}

=== Relationship with ancient languages ===

==== Thracian ====
{{See also|Thraco-Dacian||Thracian language|Classification of Thracian}}

There is general agreement among scholars that Dacian and Thracian were Indo-European languages; however, widely divergent views exist about their relationship:
# Dacian was a northern dialect or a slightly distinct variety of the Thracian language.{{sfn|Mihailov|2008|p=598}}{{sfn|Trask|2000|p=343}}{{sfn|McHenry|1993|p=645}} Alternatively, Thracian was a southern dialect of Dacian which developed relatively late. Linguists use the term Daco-Thracian or Thraco-Dacian to denote this presumed Dacian and Thracian common language.{{sfn|Trask|2000|p=343}} On this view, these dialects may have possessed a high degree of mutual intelligibility.
# Dacian and Thracian were distinct but related languages, descended from a hypothetical [[Daco-Thracian]] branch of Indo-European. One suggestion is that the Dacian differentiation from Thracian may have taken place after 1500&nbsp;BC.{{sfn|Shashi|1992|p=107}}{{sfn|''Academic American encyclopedia''|1994|p=198}} In this scenario, the two languages may have possessed only limited mutual intelligibility.
# Dacian and Thracian were related, constituting separate branches of IE.{{sfn|Georgiev|1977|p=282}} However, they shared a large number of words, which were mutual borrowings due to long-term geographical proximity.{{sfn|Duridanov|1969|p=100}} Nevertheless, they would not have been mutually intelligible.

Georgiev (1977) and Duridanov (1985) argue that the phonetic development from proto-Indo-European of the two languages was clearly divergent.

{| class="wikitable"
|+ Divergent sound-changes in Paleo-Balkan languages according to Georgiev (1977){{sfn|Georgiev|1977|pp=63, 128, 282}}
! Proto-Indo-European !! Dacian !! Thracian !! Phrygian
|-
|*o
|a
|a
|o
|-
|*e
|{{Not a typo|ie}}
|e
|e
|-
|*ew
|e
|eu
|eu
|-
|*aw
|a
|au
|
|-
|*r̥, *l̥
|ri
|ur (or), ur (ol)
|al
|-
|*n̥, *m̥
|a
|un
|an
|-
|*b, *d, *g
|b, d, g
|p, t, k
|p, t, k
|-
|*p, *t, *k
|p, t, k
|ph, th, kh
|ph, th, kh
|-
|*s
|s
|s
|∅
|-
|*sw
|s
|s
|w
|-
|*sr
|str
|str
|br
|}
'''Note''': Asterisk indicates reconstructed PIE sound. ∅ is a zero symbol (no sound, when the sound has been dropped).

{| class="wikitable"
|+ Divergent sound-changes in Dacian and Thracian according to Duridanov (1985){{sfn|Duridanov|1985|loc=ch. VIII}}
! Indo-European !! Dacian !! Thracian
|-
|*b, *d, *g
|b, d, g
|p, t, k
|-
|*p, *t, *k
|p, t, k
|ph, th, kh
|-
|*ē
|ä (a)
|ē
|-
|*e (after consonant)
|{{Not a typo|ie}}
|e
|-
|*ai
|a
|ai
|-
|*ei
|e
|ei
|-
|*dt (*tt)
|s
|st
|}

Georgiev and Duridanov argue that the phonetic divergences above prove that the Dacian and Thracian (and Phrygian, per Georgiev) languages could not have descended from the same branch of Indo-European, but must have constituted separate, stand-alone branches.{{sfn|Georgiev|1977|p=282}}{{sfn|Duridanov|1985|p={{Page needed|date=October 2021}}}} However, the validity of this conclusion has been challenged due to a fundamental weakness in the source-material for sound-change reconstruction. Since the ancient Balkan languages never developed their own alphabets, ancient Balkan linguistic elements (mainly placenames and personal names) are known only through their Greek or Latin transcripts.{{sfn|Fisher|2003|p=570}}{{sfn|Polomé|1982|p=885}} These may not accurately reproduce the indigenous sounds, e.g., Greek and Latin had no dedicated graphic signs for phonemes such as č, ġ, ž, š and others. Thus, if a Thracian or Dacian word contained such a phoneme, a Greek or Latin transcript would not represent it accurately.{{sfn|Paliga|1986|p=120}} Because of this, there are divergent and even contradictory assumptions for the phonological structure and development of the Dacian and Thracian languages.{{sfn|Polomé|1982|pp=878, 879}} This can be seen from the different sound-changes proposed by Georgiev and Duridanov, reproduced above, even though these scholars agree that Thracian and Dacian were different languages. Also, some sound-changes proposed by Georgiev have been disputed, e.g., that IE '''*T''' (tenuis) became Thracian '''TA''' (tenuis aspiratae), and '''*M''' (mediae) = '''T''': it has been argued that in both languages IE '''*MA''' (mediae aspiratae) fused into '''M''' and that '''*T''' remained unchanged.{{sfn|Rădulescu|1987|p=243}} Georgiev's claim that IE '''*o''' mutated into '''a''' in Thracian, has been disputed by Russu.{{sfn|Rădulescu|1984|p=78}}

A comparison of Georgiev's and Duridanov's reconstructed words with the same meaning in the two languages shows that, although they shared some words, many words were different.{{sfn|Georgiev|1977|pp=280, 285, 298}} However, even if such reconstructions are accepted as valid, an insufficient quantity of words have been reconstructed in each language to establish that they were unrelated.{{Citation needed|date=April 2012}}

According to Georgiev (1977), Dacian placenames and personal names are completely different from their Thracian counterparts.{{sfn|Georgiev|1977|p=298}} However, Tomaschek (1883) and Mateescu (1923) argue that some common elements exist in Dacian and Thracian placenames and personal names,{{sfn|Tomaschek|1883|p=402}}{{sfn|Rosetti|1978|p=220}} but Polomé considered that research had, by 1982, confirmed Georgiev's claim of a clear onomastic divide between Thrace and Moesia/Dacia.{{sfn|Polomé|1982|p=876}}

Georgiev highlighted a striking divergence between placename-suffixes in Dacia/Moesia and Thrace: Daco-Moesian placenames generally carry the suffix ''-dava'' (variants: ''-daba'', ''-deva''), meaning "town" or "stronghold". But placenames in Thrace proper, i.e. south of the [[Balkan mountains]] commonly end in ''-para'' or ''-pera'', meaning "village" or "settlement"{{sfn|Polomé|1982|p=872}} (cf [[Sanskrit]] ''pura'' = "town", from which derives [[Hindi]] town-suffix ''-pur'', e.g., [[Udaipur]] = "city of Udai").{{sfn|Georgiev|1977|p=191|loc=(map)}}{{sfn|Georgiev|1977|p=279}}{{sfn|Bynon|1974|pp=271–273}} [http://www.kroraina.com/thrac_lang/thrac_8.html Map showing -dava/-para divide] Georgiev argues that such toponymic divergence renders the notion that Thracian and Dacian were the same language implausible. However, this thesis has been challenged on a number of grounds:
# Papazoglu (1978) and [[Margarita Tacheva|Tacheva]] (1997) reject the argument that such different placename-suffixes imply different languages{{sfn|Papazoglu|1978|p=79}}{{sfn|Tacheva|1997|p=200}} (although, in general [[historical linguistics]], changes in placename-suffixes are regarded as potentially strong evidence of changes in prevalent language). A possible objection is that, in 2 regions of Thrace, ''-para'' is not the standard suffix: in NE Thrace, placenames commonly end in ''-bria'' ("town"), while in SE Thrace, ''-diza''/''-dizos'' ("stronghold") is the most common ending.{{sfn|Georgiev|1977|p=191|loc=(map)}} Following Georgiev's logic, this would indicate that these regions spoke a language different from Thracian. It is possible that this was the case: NE Thrace, for example, was a region of intensive Celtic settlement{{sfn|Twist|2001|p=69}} and may, therefore, have retained Celtic speech into Roman imperial times. If, on the other hand, the different endings were due simply to Thracian regional dialectal variations, the same could be true of the dava/para divide.
# Papazoglu (1978) and Fisher (2003) point out that two ''-dava'' placenames are found in Thrace proper, in contravention of Georgiev's placename divide: ''Pulpudeva'' and ''Desudaba''.{{sfn|Fisher|2003|p=570}}{{efn|{{harvnb|Papazoglu|1978|p=79}}: "... To explain the appearance of Desudaba and Pulpudeva on Thracian territory we must suppose that word dava was understandable to the Thracians although they used it infrequently. It is quite common thing in the same linguistic area to find that one type of place-name appears more frequently, or even exclusively in one district, another in another..."}} However, according to Georgiev (1977), east of a line formed by the Nestos and Uskur rivers, the traditional western boundary of Thrace proper, ''Pulpudeva'' is the only known ''-dava''-type placename,{{sfn|Georgiev|1977|p=191}} and Georgiev argues that it is not linguistically significant, as it was an extraneous and late foundation by the Macedonian king [[Philip II of Macedon|Philip II]] (''[[Plovdiv|Philippopolis]]'') and its ''-dava'' name a Moesian import.{{sfn|Georgiev|1977|p=279}}
# The dava/para divide appears to break down West of the Nestos-Uskur line, where ''-dava'' placenames, including ''Desudaba'', are intermingled with ''-para'' names.{{sfn|Georgiev|1977|p=191}} However, this does not necessarily invalidate Georgiev's thesis, as this region was the border-zone between the Roman provinces of [[Moesia Superior]] and [[Thracia]] and the mixed placename suffixes may reflect a mixed Thracian/Moesian population.

Georgiev's thesis has by no means achieved general acceptance: the Thraco-Dacian theory retains substantial support among linguists. Crossland (1982) considers that the divergence of a presumed original Thraco-Dacian language into northern and southern groups of dialects is not so significant as to rank them as separate languages.{{sfn|Crossland|1982|p=838}} According to [[Georg Solta]] (1982), there is no significant difference between Dacian and Thracian.{{sfn|Fisher|2003|p=570}}{{efn|{{harvnb|Rosetti|1982|p=5}}: "{{lang|fr|Solta montre qu'il n'y a pas de difference entre le thrace et le dace}}"}} Rădulescu (1984) accepts that Daco-Moesian possesses a certain degree of dialectal individuality, but argues that there is no fundamental separation between Daco-Moesian and Thracian.{{sfn|Rădulescu|1984|p=85}} Renfrew (1990) argues that there is no doubt that Thracian is related to the Dacian which was spoken in modern-day Romania before that area was occupied by the Romans.{{sfn|Renfrew|1990|p=71}} However, all these assertions are largely speculative, due to the lack of evidence for both languages.

Polomé (1982) considers that the evidence presented by Georgiev and Duridanov, although substantial, is not sufficient to determine whether Daco-Moesian and Thracian were two dialects of the same language or two distinct languages.{{sfn|Polomé|1982|pp=887–888}}

==== Moesian ====
{{See also|Moesi|Moesia|Dacia Aureliana}}
The ethnonym Moesi was used within the lands alongside the Danube river, in north-western Thrace. As analysed by some modern scholars, the ancient authors used the name Moesi speculatively to designate Triballians and also Getic and Dacian communities.{{sfn|Theodossiev|2000|p=88}}

==== Illyrian ====
{{See also|Illyrian language|Thraco-Illyrian}}

It is possible that Illyrian, Dacian and Thracian were three dialects of the same language, according to Rădulescu.{{sfn|Rădulescu|1984|p=85}} Georgiev (1966), however, considers Illyrian a language closely related to [[Venetic language|Venetic]] and Phrygian but with a certain Daco-Moesian admixture.{{sfn|Poultney|1968|p=339}} Venetic and Phrygian are considered centum languages, and this may mean that Georgiev, like many other paleolinguists, viewed Illyrian as probably being a centum language{{citation needed|date=September 2011}} with Daco-Moesian admixture. Georgiev proposed that Albanian, a [[Centum-satem isogloss|satemised]] language, developed from Daco-Moesian, a satemised language group, and not from Illyrian. But lack of evidence prevents any firm centum/satem classification for these ancient languages. Renfrew argues that the centum/satem classification is irrelevant in determining relationships between languages. This is because a language may contain both satem and centum features and these, and the balance between them, may change over time.{{sfn|Renfrew|1990|p=190}}

==== Gothic ====
{{See also|Gothic language}}

There was a well-established tradition in the 4th century that the Getae, believed to be Dacians by mainstream scholarship, and the Gothi were the same people, e.g., Orosius: ''Getae illi qui et nunc Gothi''. This identification, now discredited, was supported by [[Jacob Grimm]].{{sfn|Momigliano|1984|p=216}} In pursuit of his hypothesis, Grimm proposed many kindred features between the Getae and Germanic tribes.{{sfn|Hehn|1976|p=428}}

=== Relationship with modern languages ===

==== Romanian ====
{{See also|List of Romanian words of possible Dacian origin}}

The mainstream view among scholars is that Daco-Moesian forms the principal linguistic [[Substrata (linguistics)|substratum]] of modern [[Romanian language|Romanian]], a neo-Latin ([[Romance languages|Romance]]) language, which evolved from eastern [[Eastern Romance languages|Eastern Romance]] in the period AD 300–600, according to Georgiev.{{sfn|Georgiev|1977|p=287}} The possible residual influence of Daco-Moesian on modern Romanian is limited to a modest number of words and a few grammatical peculiarities.<ref>cf {{harvnb|Georgiev|1977|p={{Page needed|date=October 2021}}.}}</ref> According to Georgiev (1981), in Romanian there are about 70 words which have exact correspondences in Albanian, but the phonetic form of these Romanian words is so specific that they cannot be explained as Albanian borrowings. Georgiev claimed that these words belong to the Dacian substratum in Romanian, while their Albanian correspondences were inherited from Daco-Moesian.{{sfn|Georgiev|1981|p=142}}{{Clarify|reason=Isn't that a matter of definition? If the words in question were borrowed from Daco-Moesian, and if Albanian is descended from it, then they are still from an ancestral form of Albanian, just one that isn't usually called &quot;Albanian&quot;, just as the ancient form of Romance is usually called Latin or Vulgar Latin.|date=October 2012}}

As in the case of any Romance language, it is argued that Romanian language derived from [[Vulgar Latin]] through a series of internal linguistic changes and because of Dacian or northern Thracian influences on Vulgar Latin in the late Roman era. This influence explains a number of differences between the Romanian-Thracian substrate and the French-Celtic, Spanish-Basque, and Portuguese-Celtic substrates.{{sfn|Appel|Muysken|2006|p={{Page needed|date=October 2021}}}} Romanian has no major dialects, perhaps a reflection of its origin in a small mountain region, which was inaccessible but permitted easy internal communication. The history of Romanian is based on speculation because there are virtually no written records of the area from the time of the withdrawal of the Romans around 300&nbsp;AD until the end of the barbarian invasions around 1300&nbsp;AD.{{sfn|Walters|1988|p=18}}

Many scholars, mostly Romanian, have conducted research into a Dacian linguistic substratum for the modern Romanian language. There is still not enough hard evidence for this. None of the few Dacian words known (mainly plant-names) and none of the [[List of reconstructed Dacian words|Dacian words reconstructed from placenames]] have specific correspondent words in Romanian (as opposed to general correspondents in several IE languages). DEX doesn't mention any Dacian etymology, just a number of terms of unknown origin. Most of these are assumed by several scholars to be of Dacian origin, but there is no strong proof that they are. They could, in some cases, also be of pre-Indo-European origin (i.e. truly indigenous, from [[Stone Age]] Carpathian languages), or, if clearly Indo-European, be of [[Sarmatian]] origin – but there's no proof for this either.
It seems plausible that a few Dacian words may have survived in the speech of the Carpathian inhabitants through successive changes in the region's predominant languages: Dacian/Celtic (to AD 100), Latin/Sarmatian (c. 100–300), Germanic (c. 300–500), Slavic/Turkic (c. 500–1300), up to the Romanian language when the latter became the predominant language in the region.

===== Substratum of Common Romanian =====
{{Main|Substrate in Romanian}}
{{See also|Daco-Romanian|Daco-Romanian continuity|Thraco-Roman}}

[[Image:Romani daci.jpg|upright=1.35|right|thumb|Blue = lands conquered by the [[Roman Empire]].<br />Red = area populated by Free Dacians.<br />Language map based on the range of Dacian toponyms.{{dubious|date=November 2013}}{{citation needed|date=November 2013}}]]

The Romanian language has been denoted "[[Daco-Romanian]]" by some scholars because it derives from late Latin superimposed on a Dacian substratum, and evolved in the Roman colony of Dacia between AD 106 and 275.{{sfn|Campbell|1998|p={{Page needed|date=October 2021}}}} Modern Romanian may contain 160–170 words of Dacian origin. By comparison, modern French, according to Bulei, has approximately 180 words of Celtic origin.{{sfn|Bulei|2005|p=26}} The Celtic origin of the French substratum is certain, as the Celtic languages are abundantly documented, whereas the Dacian origin of Romanian words is in most cases speculative.

It is also argued that the Dacian language may form the substratum of [[Common Romanian]], which developed from the [[Vulgar Latin]] spoken in the Balkans north of the [[Jirecek line]], which roughly divides Latin influence from Greek influence. About 300 words in [[Eastern Romance languages]], [[Daco-Romanian]], [[Aromanian language|Aromanian]], [[Megleno-Romanian language|Megleno-Romanian]], [[Istro-Romanian language|Istro-Romanian]], may derive from Dacian, and many of these show a satem-reflex.{{Citation needed|date=September 2011}} Whether Dacian forms the substratum of Common Romanian is disputed, yet this theory does not rely only on the Romanisation having occurred in Roman Dacia, as Dacian was also spoken in [[Moesia]] and northern [[Dardania (Roman province)|Dardania]]. Moesia was conquered by the Romans more than a century before Dacia, and its Latinity is confirmed by Christian sources.{{sfn|Polomé|1983|p=539}}

[[Image:Language border (Matzinger).png|upright=1.35|left|thumb|The [[Jireček Line]], an imaginary line through the ancient [[Balkans]] that divided the influences of the [[Latin]] (in the north) and [[Greek language|Greek]] (in the south) languages until the 4th century. This line is important in establishing the Romanization area in Balkans]]
The Dacian / Thracian substratum of Romanian is often connected to the words shared between Romanian and Albanian. The correspondences between these languages reflect a common linguistic background.{{sfn|Polomé|1983|p=540}}

==== Albanian ====
{{See also|Origin of the Albanians|Albanian language}}

[[Vladimir I. Georgiev]], although accepting an Illyrian component in Albanian, and even not excluding an Illyrian origin of Albanian, proposed as the ancestor of Albanian a language called "Daco-Mysian" by him, considering it a separate language from Thracian.{{sfn|Rusakov|2017|p=555}}{{sfn|Demiraj|2006|p=78}} Georgiev maintained that "Daco-Mysian tribes gradually migrated to the northern-central part of the Balkan Peninsula, approximately to [[Dardani]]a, probably in the second millennium B.C. (or not later than the first half of the first millennium B.C.), and thence they migrated to the areas of present [[Albania]]".{{sfn|Demiraj|2006|p=78}} However, this theory is rejected by most linguists, who consider Albanian a direct descendant of ancient Illyrian.{{sfn|Lloshi|1999|p=283}} Based on shared innovations between Albanian and Messapic, [[Eric P. Hamp]] has argued that Albanian is closely related to Illyrian and not to Thracian or Daco-Moesian, maintaining that it descended from a language that was sibling of Illyrian and that was once closer to the Danube and in contact with Daco-Moesian.{{sfn|Friedman|2020|p=388}} Due to the paucity of written evidence, what can be said with certainty in current research is that on the one hand a significant group of [[Albanian-Romanian linguistic relationship|shared]] Indo-European non-Romance cognates between Albanian and Romanian indicates at least contact with the 'Daco-Thraco-Moesian complex', and that on the other hand there is some evidence to argue that Albanian is descended from the 'Illyrian complex'.{{sfn|Friedman|2022}} From a "genealogical standpoint", Messapic is the closest at least partially attested language to Albanian. Hyllested & Joseph (2022) label this Albanian-Messapic branch as ''Illyric'' and in agreement with recent bibliography identify Greco-Phrygian as the IE branch closest to the Albanian-Messapic one. These two branches form an areal grouping - which is often called "Balkan IE" - with Armenian.{{sfn|Hyllested|Joseph|2022|p=235}}

==== Baltic languages ====
There is significant evidence of at least a long-term proximity link, and possibly a genetic link, between Dacian and the modern Baltic languages. The Bulgarian linguist [[:bg:Иван Дуриданов|Ivan Duridanov]], in his first publication claimed that Thracian and Dacian are genetically linked to the Baltic languages{{sfn|Duridanov|1969}}{{sfn|Dėl žynio Žalmokšio vardo kilmės}} and in the next one he made the following classification:<blockquote>"The Thracian language formed a close group with the Baltic (resp. Balto-Slavic), the Dacian and the "[[Pelasgian]]" languages. More distant were its relations with the other Indo-European languages, and especially with Greek, the Italic and Celtic languages, which exhibit only isolated phonetic similarities with Thracian; the Tokharian and the Hittite were also distant."{{sfn|Duridanov|1976}}</blockquote>Duridanov's cognates of the [[List of reconstructed Dacian words|reconstructed Dacian words]] are found mostly in the Baltic languages, followed by Albanian without considering Thracian. Parallels have enabled linguists, using the techniques of [[comparative linguistics]], to decipher the meanings of several Dacian and Thracian placenames with, they claim, a high degree of probability. Of 74 Dacian placenames attested in primary sources and considered by Duridanov, a total of 62 have Baltic cognates, most of which were rated "certain" by Duridanov.{{sfn|Duridanov|1969|pp=95–96}} Polomé considers that these parallels are unlikely to be coincidence.{{sfn|Polomé|1982}} Duridanov's explanation is that proto-Dacian and proto-Thracian speakers were in close geographical proximity with [[Proto-Baltic language|proto-Baltic]] speakers for a prolonged period, perhaps during the period 3000–2000 BC.{{sfn|Duridanov|1969|p=100}} A number{{sfn|Vyčinienė|p=122}} of scholars such as the Russian Topоrov{{sfn|Toporov|1973|pp=51–52}} have pointed to the many close parallels between Dacian and Thracian placenames and those of the [[Baltic languages|Baltic]] language-zone&nbsp;– [[Lithuania]], [[Latvia]] and in [[East Prussia]] (where an extinct but well-documented Baltic language, [[Old Prussian]], was spoken until it was displaced by [[German language|German]] during the Middle Ages).{{sfn|Duridanov|1969|pp=9–11}}

After creating a list of names of rivers and personal names with a high number of parallels, the Romanian linguist Mircea M. Radulescu classified the Daco-Moesian and Thracian as Baltic languages of the south and also proposed such classification for [[Illyrian language|Illyrian]].{{sfn|Rădulescu|1987}} The German linguist Schall also attributed a southern Baltic classification to Dacian.<ref name="Schall H. 1974" /> The American linguist Harvey Mayer refers to both Dacian and Thracian as Baltic languages. He claims to have sufficient evidence for classifying them as Baltoidic or at least "Baltic-like," if not exactly, Baltic dialects or languages{{sfn|Mayer|1992}}{{sfn|Mayer|1996}} and classifies [[Dacians]] and [[Thracians]] as "Balts by extension".{{sfn|Mayer|1997}} According to him, [[Albanian language|Albanian]], the descendant of [[Illyrian language|Illyrian]], escaped any heavy Baltic influence of Daco-Thracian.{{sfn|Mayer|1997}} Mayer claims that he extracted an unambiguous evidence for regarding Dacian and Thracian as more tied to Lithuanian than to Latvian.{{sfn|Mayer|1996}}{{sfn|Mayer|1999}} The Czech archaeologist Kristian Turnvvald classified Dacian as [[Danube|Danubian]] Baltic.{{sfn|Turnvvald|1968|p={{Page needed|date=October 2021}}}} The Venezuelan-Lithuanian historian Jurate de Rosales classifies Dacian and Thracian as Baltic languages.{{sfn|de Rosales|2015}}{{sfn|de Rosales|2020}}

It appears from the study of hydronyms (river and lake names) that Baltic languages once predominated much farther eastwards and southwards than their modern confinement to the southeastern shores of the Baltic sea, and included regions that later became predominantly Slavic-speaking. The zone of Baltic hydronyms extends along the Baltic coast from the mouth of the [[Oder]] as far as [[Riga]], eastwards as far as the line [[Yaroslavl]]–[[Moscow]]–[[Kursk]] and southwards as far as the line Oder mouth–[[Warsaw]]–[[Kyiv]]–[[Kursk]]: it thus includes much of northern and eastern [[Poland]], [[Belarus]] and central [[European Russia]].{{sfn|Gimbutas|1963|pp=30–31 (fig. 2)}}{{sfn|Heather|2009|loc=map 16}}

=== Dacian as an Italic language ===
Another theory maintains that the Dacians spoke a language akin to Latin and that the people who settled in the Italian Peninsula shared the same ancestors.

The Romanian philologist [[Nicolae Densușianu]] argued in his book ''Dacia Preistorică'' (Prehistoric Dacia), published in 1913, that Latin and Dacian were the same language or were mutually intelligible. His work was considered by mainstream linguists to be [[pseudoscience]]. It was reprinted under the regime of [[Nicolae Ceaușescu]]. The first article to revive Densușianu's theory was an unsigned paper, "The Beginnings of the History of the Romanian People", included in ''Anale de istorie'',{{sfn|Anale de Istorie|1976}} a journal published by the [[Romanian Communist Party]]'s Institute of Historical and Social-Political Studies.{{sfn|Boia|2001|pp=103–105}} The article claimed that the Thracian language was a pre-Romance or Latin language. Arguments used in the article include for instance the absence of [[Interpreting|interpreters]] between the Dacians and the Romans, as depicted on the bas-reliefs of [[Trajan's column]].{{sfn|Boia|2001|pp=103–105}} The bibliography mentions, apart from Densușianu, the work of French academician [[Louis Armand]], an engineer who allegedly showed that "the Thraco-Dacians spoke a pre-Romance language". Similar arguments are found in [[Iosif Constantin Drăgan]]'s ''We, the Thracians'' (1976).{{sfn|Boia|2001|pp=103–105}} About the same time [[Ion Horațiu Crișan]] wrote "Burebista and His Age" (1975).{{sfn|Boia|2001|pp=103–105}} Nevertheless, the theory didn't rise to official status under Ceaușescu's rule.

Opinions about a hypothetical latinity of Dacian can be found in earlier authors: Sextus Rufus (Breviarum C.VIII, cf. Bocking Not, Dign. II, 6), Ovid (Trist. II, 188–189) and Horace (Odes, I, 20).

[[Iosif Constantin Drăgan]] and the [[New York City]]-based physician [[Napoleon Săvescu]] continued to support this theory and published a book entitled ''We Are Not Rome's Descendants''.{{sfn|''Noi nu suntem urmașii Romei''}} They also published a magazine called ''Noi, Dacii'' ("Us Dacians") and organised a yearly "International Congress of Dacology".{{sfn|Congrese Dacologie: Dacia Revival}}

Less radical theories have suggested that Dacian was either [[Italic languages|Italic]] or [[Celtic languages|Celtic]], like the speakers of those Indo-European languages in Western Europe who became Latinized and now speak Romance languages.

==Sources==
[[File:Poiana vase.jpg|right|thumb|A fragment of a vase collected by [[Mihail Dimitriu]] at the site of [[Poiana, Galați]] ([[Piroboridava]]), [[Romania]] illustrating the use of Greek and Latin letters by a Dacian potter (source: [[Dacia (journal)|Dacia journal]], 1933)]]
Many characteristics of the Dacian language are disputed or unknown. No lengthy texts in Dacian exist, only a few glosses and personal names in ancient Greek and Latin texts. No Dacian-language inscriptions have been discovered, except some of names in the Latin or Greek alphabet. What is known about the language derives from:

[[File:Koson 79000126.jpg|thumb|Gold ''[[stater]]'' coin found in Dacia. ''Obverse'': [[Roman magistrate]] with [[lictors]]. Legend [[Coson|ΚΟΣΩΝ]] (''Coson'') and (''left centre'') monogram BR or OΛB. ''Reverse'': Eagle clutching laurel-wreath. Probably minted in a Greek [[Black sea]] city ([[Olbia, Ukraine|Olbia]]?), commissioned by a Thracian or Getan king ([[Cotiso]]? Koson?) or by a high Roman official ([[Marcus Junius Brutus the Younger|Brutus]]?), in honour of the other. Late 1st century BC]]
* Placenames, river-names and personal names, including the names of kings. The coin inscription KOΣON (''Koson'') may also be a personal name, of the king who issued the coin.
* The Dacian names of about fifty plants written in [[Greece|Greek]] and [[Ancient Rome|Roman]] sources (see [[List of Dacian plant names]]). Etymologies have been established for only a few of them.{{sfn|Daicoviciu|1972|p=27}}
* [[Substrata (linguistics)|Substratum]] words found in [[Romanian language|Romanian]], the language that is spoken today in most of the region once occupied by Dacian-speakers. These include [[List of Romanian words of possible pre-Roman origin|about 400 words]] of uncertain origin. Romanian words for which a Dacian origin has been proposed include: {{lang|ro|balaur}} ("dragon"), {{lang|ro|brânză}} ("cheese"), {{lang|ro|mal}} ("bank, shore"), and {{lang|ro|strugure}} ("grape").{{sfn|Price|1998|p=21}} However, the value of the substratum words as a source for the Dacian language is limited because there is no certainty that these are of Dacian origin. This can be seen in the ''Dicționar Explicativ al Limbii Române'' (DEX), which shows multiple possible etymologies for most of the words:
# Many of the words may not be "substratum" at all, as Latin etymologies have been proposed for them. These are inherently more likely than a Dacian origin, as the Romanian language is descended from Latin, not Dacian, e.g., {{lang|ro|melc}} ("snail") may derive from Latin {{lang|la|limax}}/proto-Romance *''limace'' (cf. It. {{Lang|la|lumaca}}), by [[Metathesis (linguistics)|metathesis]] of "m" with "l".{{sfn|DEX|loc=[https://dexonline.ro/definitie/melc melc]}}
# Some may derive from other little-known ancient languages at some time spoken in Dacia or Moesia: for example, the [[Iranian languages|Iranian]] [[Sarmatian language|Sarmatian]], or the [[Turkic languages|Turkic]] [[Pannonian Avars#Language|Pannonian Avar]], [[Bulgar language|Bulgar]] or [[Cuman language|Cuman]] languages,{{Citation needed|date=August 2011}} or, conceivably, some unknown pre-Indo-European language(s) of the Carpathians or Balkans.{{Citation needed|date=August 2011}} An illustration of the latter possibility are pre-Indo-European substratum (i.e., [[Iberian language|Iberian]]/[[Basque language|Basque]]) in [[Spanish language|Spanish]], e.g., "fox" = {{lang|es|zorro}}, from Basque {{lang|eu|azeri}}, instead of [[proto-Romance]] *''vulpe''. A pre-Indo-European origin has been proposed for several Romanian substratum words, e.g., {{lang|ro|balaur}},{{sfn|DEX|loc=[https://dexonline.ro/definitie/balaur balaur]}}  {{lang|ro|brad}} ("fir-tree").{{sfn|DEX|loc=[https://dexonline.ro/definitie/brad brad]}}
# About 160 of the Romanian substratum words have [[cognate]]s in [[Albanian language|Albanian]].{{sfn|Polomé|1982|p=998}} A possible example is Romanian {{lang|ro|brad}} ("fir-tree"), Alb. cognate {{lang|sq|bradh}} (same meaning).{{sfn|DEX|loc=[https://dexonline.ro/definitie/brad brad]}} Duridanov has reconstructed *''skuia'' as a Dacian word for fir-tree.{{sfn|Duridanov|1969|p=94}}
# The numerous Romanian substratum words that have cognates in [[Bulgarian language|Bulgarian]] may derive from [[Thracian language|Thracian]], which may have been a different language from Dacian (see below, [[Dacian language#Relationship with ancient languages|Thracian]]).

{{Lang|ro|[[Balaur#Etymology|Balaur]]}} ("dragon"), ascribed a Dacian origin by some scholars, exemplifies the etymological uncertainties. According to DEX, {{lang|ro|balaur}} has also been identified as: a pre-Indo-European relic; or derived from Latin {{lang|la|belua}} or {{lang|la|beluaria}} ("beast" cf. It. {{Lang|la|belva}}), or ancient Greek {{lang|grc-Latn|pelorion}} ("monster"); or as a cognate of Alb. {{Lang|sq|buljar}} ("water-snake").{{sfn|DEX|loc=[https://dexonline.ro/definitie/balaur balaur]}} DEX argues that these etymologies, save the Albanian one, are dubious, but they are no more so than the unverifiable assertion that {{lang|ro|balaur}} is derived from an unknown Dacian word.

The substratum words have been used, in some cases, to corroborate [[List of reconstructed Dacian words|Dacian words reconstructed from place- and personal names]], e.g., Dacian *{{lang|xdc|balas}} = "white" (from personal name ''Balius''), Romanian {{lang|ro|bălan}} = "white-haired" However, even in this case, it cannot be determined with certainty whether the Romanian word derives from the presumed Dacian word or from its [[Proto-Slavic language|Old Slavic]] cognate ''belu''.

==Geographical extent==
[[File:Dacia around 60-44 BC during Burebista, including campaigns - French.png|thumb|Map of [[Dacia]] 1st century BC]]
[[File:Ptolemy Cosmographia Dacia+Danube.jpg|thumb|right|text-top|Dacia's map from a medieval book made after [[Ptolemy]]'s ''[[Geographia]]'' (c. 140 AD)]]

===Linguistic area===
Dacian was probably one of the major languages of [[south-eastern Europe]], spoken in the area between the [[Danube]], Northern Carpathians, the [[Dnister]] River and the Balkans, and the [[Black Sea]] shore.{{Citation needed|date=August 2011}} According to historians, as a result of the linguistic unity of the Getae and Dacians that are found in the records of ancient writers Strabo, [[Cassius Dio]], [[Trogus Pompeius]], [[Appian]], and [[Pliny the Elder]], contemporary historiography often uses the term Geto-Dacians to refer to the people living in the area between the Carpathians, the Haemus (Balkan) Mountains, the Black Sea, Dnister River, Northern Carpathians, and middle Danube. Strabo gave more specific information, recording that "the Dacians speak the same language as the Getae" a dialect of the Thracian language.{{sfn|Bolovan|Constantiniu|Michelson|Pop|1997|p=10}} The information provided by the Greek geographer is complemented by other literary, linguistic, and archaeological evidence. Accordingly, the Geto-Dacians may have occupied territory in the west and north-west, as far as Moravia and the middle Danube, to the area of present-day [[Serbia]] in the south-west, and as far as the Haemus Mountains (Balkans) in the south. The eastern limit of the territory inhabited by the Geto-Dacians may have been the shore of the Black Sea and the Tyras River (Dnister), possibly at times reaching as far as the [[Bug (river)|Bug]] River, the northern limit including the Trans-Carpathian westernmost [[Ukraine]] and southern [[Poland]].{{sfn|Bolovan|Constantiniu|Michelson|Pop|1997|pp=10–11}}

Over time, some peripheral areas of the Geto-Dacians' territories were affected by the presence of other people, such as the [[Celts]] in the west, the [[Illyrians]] in the south-west, the [[Greeks]] and [[Scythians]] in the east and the [[Bastarnae]] in the north-east. Nevertheless, between the Danube River (West), the Haemus Mountains (S), the Black Sea (E), the Dniester River (NE) and the northern Carpathians, a continuous Geto-Dacian presence as majority was permanently maintained, according to some scholars.{{sfn|Bolovan|Constantiniu|Michelson|Pop|1997|p=11}} According to the Bulgarian linguist Georgiev, the Daco-Mysian region included Dacia (approximately contemporary Romania and Hungary east of the [[Tisza]] River, Mysia (Moesia) and Scythia Minor (contemporary Dobrogea).{{sfn|Georgiev|1981|p=148}}

[[File:A_mai_that_Shows_Where_the_Dacians_lived.png|thumb|right|alt=this map shows where dacians mostly lived and where their language was spoken|The approximate map showing where the Dacian language was spoken]]

===Chronology===
====1st century BC====
In 53&nbsp;BC, [[Julius Caesar]] stated that the lands of the Dacians started on the eastern edge of the Hercynian Forest.{{sfn|Mountain|1998|p=59}} This corresponds to the period between 82 and 44&nbsp;BC, when the Dacian state reached its widest extent during the reign of King [[Burebista]]: in the west it may have extended as far as the middle Danube River valley in present-day Hungary, in the east and north to the Carpathians in present-day Slovakia and in the south to the lower Dniester valley in present-day south-western Ukraine and the western coast of the Black Sea as far as Appollonia.{{sfn|Magocsi|Pop|2002|p=71}} At that time, some scholars believe, the Dacians built a series of hill-forts at [[Zemplín (region)|Zemplin]] (Slovakia), [[Mala Kopania]] (Ukraine), [[Oncești, Maramureș]] (Romania) and [[Solotvyno]] (Ukraine).{{sfn|Magocsi|Pop|2002|p=71}} The [[Zemplín (region)|Zemplin]] settlement appears to belong to a Celto-Dacian horizon, as well as the river ''Patissus'' (Tisa)'s region, including its upper stretch, according to Shchukin (1989).{{sfn|Shchukin|1989|p=347}} According to Parducz (1956) Foltiny (1966), Dacian archaeological finds extend to the west of Dacia, and occur along both banks of the Tisza.{{sfn|Ehrich|1970|p=228}} Besides the possible incorporation of a part of Slovakia into the Dacian state of Burebista, there was also Geto-Dacian penetration of south-eastern Poland, according to Mielczarek (1989).{{sfn|Mielczarek|1989|p=121}} The Polish linguist [[Milewski|Milewski Tadeusz]] (1966 and 1969) suggests that in the southern regions of Poland appear names that are unusual in northern Poland, possibly related to Dacian or Illyrian names.{{sfn|Milewski|1969|p=304}}{{sfn|Antoniewicz|1966|p=12}} On the grounds of these names, it has been argued that the region of the Carpathian and Tatra Mountains was inhabited by Dacian tribes linguistically related to the ancestors of modern Albanians.{{sfn|Milewski|1969|p=306}}{{sfn|Antoniewicz|1966|p=12}}

Also, a formal statement by Pliny indicated the river [[Vistula river|Vistula]] as the western boundary of Dacia, according to Nicolet (1991).{{sfn|Nicolet|1991|p=109}} Between the Prut and the Dniester, the northern extent of the appearance of Geto-Dacian elements in the 4th century BC coincides roughly with the extent of the present-day Republic of Moldova, according to Mielczarek.{{sfn|Mielczarek|1989|p=13}}

According to [[Karl Müllenhoff|Müllenhoff]] (1856), Schütte (1917), Urbańczyk (2001) and Matei-Popescu (2007), [[Marcus Vipsanius Agrippa|Agrippa]]'s commentaries mention the river Vistula as the western boundary of Dacia.{{sfn|Urbańczyk|2001|p=510}}{{sfn|Müllenhoff|1856|p=19}}{{efn|{{harvnb|Schütte|1917|p=87}}: "The Romans knew the dimensions of Dacia, as it is stated by Agrippa (c. 63 BC&nbsp;– 12 BC) in his Commentaries: 'Dacia, Getica finiuntur ab oriente desertis Sarmatiae, ab occidente flumine Vistula, a septentrione Oceano, a meridie flumine Histro. quae patent in longitudine milia passuum CCLXXX, in latitudine qua cognitum est milia passuura CCCLXXXVI'"}} Urbańczyk (1997) speculates that according to Agrippa's commentaries, and the map of Agrippa (before 12&nbsp;BC), the Vistula river separated Germania and Dacia.{{sfn|Urbańczyk|1997|p=13}} This map is lost and its contents are unknown{{efn|See one possible reconstruction: {{harv|livius: Image}}}} However, later Roman geographers, including [[Ptolemy]] (AD 90&nbsp;– c. AD 168) (II.10, III.7) and Tacitus (AD 56&nbsp;– AD 117){{sfn|Tacitus|p=46}} considered the Vistula as the boundary between Germania and Sarmatia Europaea, or Germania and Scythia.{{sfn|Urbańczyk|2001|p=510}}

====1st century AD====
Around 20 [[Anno Domini|AD]], [[Strabo]] wrote the ''Geographica'' that provides information regarding the extent of regions inhabited by the Dacians.{{sfn|Strabo|Jones|Sterrett|1917–1961|p=28}} On its basis, Lengyel and Radan (1980), Hoddinott (1981) and Mountain (1998) consider that the Geto-Dacians inhabited both sides of the [[Tisza]] river before the rise of the Celtic Boii and again after the latter were defeated by the Dacians.{{sfn|Taylor|2001|p=215}}{{efn|{{harvnb|Strabo|loc=VII.3.1}}: "As for the southern part of Germany beyond the Albis, the portion which is just contiguous to that river is occupied by the Suevi; then immediately adjoining this is the land of the Getae, which, though narrow at first, stretching as it does along the Ister on its southern side and on the opposite side along the mountain-side of the Hercynian Forest (for the land of the Getae also embraces a part of the mountains), afterwards broadens out towards the north as far as the Tyregetae; but I cannot tell the precise boundaries."}}{{sfn|Strabo|loc=V.1.6; VII.1.3; VII.5.2}}{{efn|{{harvnb|Lengyel|Radan|Barkóczi|Bónis|1980|p=87}} "No matter where the Boii first settled after they left Italia, however, when they arrived at the Danube they had to fight the Dacians who held the entire territory&nbsp;— or at least part of it. Strabo tells us that later animosity between the Dacians and the Boii stemmed from the fact that the Dacians demanded the land from the latter which the Dacians pretended to have possessed earlier."}} The hold of the Dacians between the Danube and the Tisza appears to have been tenuous.{{sfn|Lengyel|Radan|Barkóczi|Bónis|1980|p=87}} However, the Hungarian archaeologist Parducz (1856) argued for a Dacian presence west of the Tisza dating from the time of Burebista.{{sfn|Ehrich|1970|p=228}} According to [[Tacitus]] (AD 56&nbsp;– AD 117) Dacians were bordering Germany in the south-east while Sarmatians bordered it in the east.{{efn|{{harvnb|Gruen|2011|p=204}} Germany as a whole is separated from the Gauls and from the Raetians and Pannonians by the rivers Rhine and Danube, from the Sarmatians and Dacians by mutual fear or mountains; the ocean surrounds the rest of it.}}

In the 1st century AD, the [[Iazyges]] settled in the west of Dacia, on the plain between the Danube and the Tisza rivers, according to some scholars' interpretation of [[Pliny the Elder|Pliny]]'s text: "The higher parts between the Danube and the Hercynian Forest (Black Forest) as far as the winter quarters of Pannonia at Carnuntum and the plains and level country of the German frontiers there are occupied by the Sarmatian Iazyges, while the Dacians whom they have driven out hold the mountains and forests as far as the river Theiss".{{sfn|Hrushevskyi|1997|p=93}}{{sfn|Bosworth|1980|p=60}}{{sfn|Pliny the Elder|p=179}}{{sfn|Carnap-Bornheim|2003|p=228}}{{sfn|Shelley|1997|p=10}}

Archaeological sources indicate that the local Celto-Dacian population retained its specificity as late as the 3rd century AD.{{sfn|Mielczarek|1989|p=13}} Archaeological finds dated to the 2nd century AD, after the Roman conquest, indicate that during that period, vessels found in some of the Iazygian cemeteries reveal fairly strong Dacian influence, according to Mocsy.{{sfn|Mocsy|1974|p=95}} M. Párducz (1956) and Z. Visy (1971) reported a concentration of Dacian-style finds in the Cris-Mures-Tisza region and in the Danube bend area near Budapest. These maps of finds remain valid today, but they have been complemented with additional finds that cover a wider area, particularly the interfluvial region between the Danube and Tisza.{{sfn|Toma|2007|p=65}} However, this interpretation has been invalidated by late 20th-century archaeology, which has discovered Sarmatian settlements and burial sites all over the Hungarian Plain on both sides of the Tisza, e.g., Gyoma in south-eastern Hungary and Nyiregyhaza in north-eastern Hungary.{{citation needed|date=June 2011}} The ''Barrington Atlas'' shows the Iazyges occupying both sides of Tisza (map 20).

====2nd century AD====
[[File:Central Europemap Pannonia Dacia and others.jpg|thumb|right|Map of South-Eastern Europe including Dacia]]

Written a few decades after the Roman conquest of Dacia 105–106 AD,{{sfn|Mattern|2002|p=61}} Ptolemy's ''[[Geographia]]'' defined the boundaries of Dacia. There is a consensus among scholars that Ptolemy's Dacia was the region between the rivers [[Tisza]], Danube, upper [[Dniester]], and [[Siret]].{{efn|{{harvnb|Hrushevskyi|1997|p=97}}: Dacia, as described by Ptolemy, occupied the region between the Tisza, Danube, upper Dnister, and Seret, while the Black Sea coast&nbsp;— namely, the Greek colonies of Tyras, Olbia, and others&nbsp;— were included in Lower Moesia.}}{{sfn|Bunbury|1979|p=517}}{{sfn|Mocsy|1974|p=21}}{{sfn|Pop|Nägler|2005|p=71}} The mainstream of historians accepted this interpretation: Avery (1972) [[Jean Bérenger|Berenger]] (1994) Fol (1996) Mountain (1998), Waldman Mason (2006).{{sfn|Berenger|1994|p=25}}{{sfn|Mountain|1998|p=59}}{{sfn|Waldman|Mason|2006|p=205}}{{sfn|Avery|1972|p=113}}{{sfn|Fol|1996|p=223}} Ptolemy also provided Dacian toponyms in the Upper [[Vistula]] (Polish: Wisła) river basin in Poland: Susudava and Setidava (with a manuscript variant Getidava.{{sfn|Dobiáš|1964|p=70}}{{sfn|Berindei|Candea|2001|p=429}}{{sfn|Schütte|1952|p=270}}{{sfn|Giurescu|Giurescu|1974|p=31}} This may be an echo of Burebista's expansion.{{sfn|Berindei|Candea|2001|p=429}} It appears that this northern expansion of the Dacian language as far as the Vistula river lasted until 170–180 AD when the [[Hasdings]], a Germanic tribe, expelled a Dacian group from this region, according to Schütte (1917) and Childe (1930).{{sfn|Childe|1930|p=245}}{{sfn|Schütte|1917|pp=143, 109}} This Dacian group is associated by Schütte (1952) with towns having the specific Dacian language ending 'dava' i.e. Setidava.{{sfn|Schütte|1952|p=270}} A previous Dacian presence that ended with the Hasdings' arrival is considered also by {{harvp|Heather|2010}} who says that the Hasdings Vandals "attempted to take control of lands which had previously belonged to a free Dacian group called the Costoboci"{{sfn|Heather|2010|p=131}} Several tribes on the northern slopes of the Carpathians were mentioned that are generally considered Thraco-Dacian, i.e. Arsietae (Upper Vistula),{{sfn|Schütte|1952|p=270}}{{sfn|Popescu-Spineni|1987|p=53}}{{sfn|Rădulescu|1987|p=249}}{{sfn|Russu|1969|p=27}}{{sfn|Wald|Sluşanschi|Băltăceanu|1987|p=117}} Biessi / Biessoi{{sfn|Russu|1969|p=27}}{{sfn|Popescu-Spineni|1987|p=53}}{{sfn|Schütte|1917|p=99}}{{sfn|Georgiev|1972|p=63}} and Piengitai.{{sfn|Popescu-Spineni|1987|p=53}}{{sfn|Wald|Sluşanschi|Băltăceanu|1987|p=117}} Schütte (1952) associated the Dacian tribe of Arsietae with the Arsonion town.{{sfn|Schütte|1952|p=270}} The ancient documents attest names with the Dacian name ending ''-dava'' 'town' in the Balto-Slavic territory, in the country of Arsietae tribe, at the sources of the Vistula river.{{sfn|Poghirc|1983|p=92}} The Biessi inhabited the foothills of the Carpathian Mountains, which on Ptolemy's map are located on the headwaters of the Dnister and Sian Rivers, the right-bank Carpathian tributary of the Vistula river.{{sfn|Hrushevskyi|1997|p=98}} The Biessi (Biessoi) probably left their name to the mountain chain of Bieskides that continues the Carpathian Mountains towards the north (Schütte 1952).{{sfn|Schütte|1952|p=270}} Ptolemy (140&nbsp;AD) lists only Germanic or Balto-Slavic tribes, and no Dacians,{{full citation needed|date=June 2011}}on both sides of the Vistula (ref: II.10; III.7), as does the ''[[Barrington Atlas]]'' (map 19).{{sfn|Barrington Atlas|2000|loc=Map 19}}

After the [[Marcomannic Wars]] (166–180 AD), Dacian groups from outside Roman Dacia had been set in motion, and thus were the 12,000 Dacians "from the neighbourhood of Roman Dacia sent away from their own country". Their native country could have been the Upper Tisza region but other places cannot be excluded.{{sfn|Opreanu|1997|p=249}}

===Dacian linguistic zone in the early Roman imperial era (30&nbsp;BC&nbsp;– AD 100)===
====Historical linguistic overview====
Mainstream scholarship believes the Dacian language had become established as the predominant language north of the Danube in Dacia well before 1000&nbsp;BC and south of the river, in Moesia, before 500&nbsp;BC.

Starting around 400&nbsp;BC, Celtic groups, moving out of their [[La Tène culture|La Tène]] cultural heartland in southern Germany/eastern Gaul, penetrated and settled south-eastern Europe as far as the Black Sea and into [[Anatolia]]. By c. 250&nbsp;BC, much of the modern states of Austria, Slovakia, Hungary and Romania, and Bessarabia and Moesia, were under Celtic cultural influence and probably political domination in many regions.{{sfn|Twist|2001|p=59}} This migratory process brought Celtic material culture, especially advanced in metallurgy, to the Illyrian and Dacian tribes. Especially intensive Celtic settlement, as evidenced by concentrations of La Tène-type cemeteries, took place in Austria, Slovakia, the Hungarian Plain, Transylvania, Bessarabia and eastern Thrace.{{sfn|Twist|2001|p=69}} Central Transylvania appears to have become a Celtic enclave or unitary kingdom, according to Batty.{{sfn|Batty|2007|p=279}} It is likely that during the period of Celtic pre-eminence, the Dacian language was eclipsed by Celtic dialects in Transylvania. In Moesia, South of the Danube, there was also extensive Celticisation.{{sfn|Twist|2001|p=59}} An example is the [[Scordisci]] tribe of Moesia Superior, reported by the ancient historian [[Livy]] to be Celtic-speaking and whose culture displays Celtic features.

By 60&nbsp;BC, Celtic political hegemony in the region appears to have collapsed, and the indigenous Dacian tribes throughout the region appear to have reasserted their identity and political independence.{{sfn|Twist|2001|p=91}} This process may have been partly due to the career of the Getan king [[Burebista]] (ruled ca 80&nbsp;– 44&nbsp;BC), who appears to have coalesced several Getic and Dacian tribes under his leadership. It is likely that in this period, the Dacian language regained its former predominance in Transylvania.

In 29–26 BC, Moesia was conquered and annexed by the Romans. There followed an intensive process of Romanisation. The Danube, as the new frontier of the empire and main fluvial supply route for the Roman military, was soon dotted with forts and supply depots, which were garrisoned by several [[Roman legion|legions]] and many [[Roman auxiliaries|auxiliary]] units. Numerous colonies of Roman army veterans were established. The presence of the Roman military resulted in a huge influx of non-Dacian immigrants, such as soldiers, their dependents, ancillary workers and merchants, from every part of the Roman Empire, especially from the rest of the Balkans, into Moesia. It is likely that by the time the emperor Trajan invaded Dacia (101–6), the Dacian language had been largely replaced by Latin in Moesia.

The conquest of Dacia saw a similar process of Romanisation north of the Danube, so that by 200&nbsp;AD, Latin was probably predominant in the zone permanently occupied by the Romans. In addition, it appears that some unoccupied parts of the dava zone were overrun, either before or during the Dacian Wars, by Sarmatian tribes; for example, eastern Wallachia, which had fallen under the [[Roxolani]] by 68&nbsp;AD.{{sfn|Tacitus, Histories|loc=I.79}} By around 200&nbsp;AD, it is likely that the Dacian language was confined to those parts of the dava zone occupied by the [[Free Dacian]] groups, which may have amounted to little more than the eastern Carpathians.

Under the emperor [[Aurelian]] (r. 270–275), the Romans withdrew their administration and armed forces, and possibly a significant proportion of the provincial population, from the part of Dacia they ruled. The subsequent linguistic status of this region is disputed. Traditional Romanian historiography maintains that a Latin-speaking population persisted into medieval times, to form the basis of today's Romanian-speaking inhabitants. But this hypothesis lacks evidential basis (e.g., the absence of any post-275 Latin inscriptions in the region, other than on imported Roman coins/artefacts). What is certain is that by AD 300, the entire North Danubian region had fallen under the political domination of Germanic-speaking groups, a hegemony that continued until c. AD 500: the [[Goths]] held overall hegemony, and under them, lesser Germanic tribes such as the [[Taifali]] and [[Gepids]]. Some historians consider that the region became Germanic-speaking during this period.{{sfn|Heather|1999|p=155}} At least one part, [[Wallachia]], may have become Slavic-speaking by AD 600, as it is routinely referred to ''Sklavinía'' (Greek for "Land of the Slavs") by contemporary Byzantine chroniclers. The survival of the Dacian language in this period is impossible to determine, due to a complete lack of documentation. However, it is generally believed that the language was extinct by AD 600.

====Dacia and Moesia: zone of toponyms ending in ''-dava''====
[[File:Teritoriul onomastic al elementului dava - Sorin Olteanu.jpg|thumb|right|upright=1.5|Map of the geographical distribution of attested placenames with the ''-dava'' suffix, covering Dacia, Moesia, Thrace and Dalmatia, according to Olteanu (2010). The dava distribution confirms Dacia and Moesia as the zone of Dacian speech. The dava zone is, with few exceptions, consistent with Ptolemy's definition of Dacia's borders. There is no conclusive evidence that Dacian was a predominant language outside the dava zone in the 1st century AD. According to Strabo, the Thracians spoke the same language as the Dacians, in which case Dacian was spoken as far as the Aegean Sea and the [[Bosporus]]. But Strabo's view is controversial among modern linguists: dava placenames are absent south of the [[Balkan Mountains]], with one exception (see [[Dacian language#Relationship with ancient languages|Thracian]], below)]]

At the start of the Roman imperial era (30&nbsp;BC), the Dacian language was probably predominant in the ancient regions of [[Dacia]] and [[Moesia]] (although these regions probably contained several enclaves of Celtic and Germanic speakers). Strabo's statement that the Moesian people spoke the same language as the Dacians and Getae is consistent with the distribution of placenames, attested in Ptolemy's ''Geographia'', which carry the Dacian suffix ''-dava'' ("town" or "fort").

North of the Danube, the dava-zone is largely consistent with Ptolemy's definition of Dacia's borders (III.8.1–3) i.e. the area contained by the river ''Ister'' ([[Danube River|Danube]]) to the south, the river ''Thibiscum'' ([[Timiș River|Timiș]]) to the west, the upper river ''Tyras'' ([[Dniester river|Dniester]]) to the north and the river ''Hierasus'' ([[Siret River|Siret]]) to the east.{{sfn|Ptolemy|loc=III.8.1–3}} To the west, it appears that the ''-dava'' placenames in Olteanu's map lie within the line of the Timiş, extended northwards. However, four davas are located beyond the Siret, Ptolemy's eastern border. But three of these, ''Piroboridava'', ''Tamasidava'' and ''Zargidava'', are described by Ptolemy as ''pará'' (Gr."very close") to the Siret: ''Piroboridava'', the only one securely located, was 3&nbsp;km from the Siret.{{sfn|Barrington Atlas|2000|loc=Map 22}} The location of ''Clepidava'' is uncertain: Olteanu locates it in north-east [[Bessarabia]], but Georgiev places it further west, in south-west Ukraine, between the upper reaches of the Siret and Dniester rivers.{{sfn|Georgiev|1977|p=191 (map)}}

South of the Danube, a dialect of Dacian called ''Daco-Moesian'' was probably predominant in the region known to the Romans as Moesia, which was divided by them into the [[Roman provinces]] of [[Moesia Superior]] (roughly modern Serbia) and [[Moesia Inferior]] (modern northern Bulgaria as far as the Balkan range plus Roman [[Dobruja]] region). This is evidenced by the distribution of ''-dava'' placenames, which occur in the eastern half of Moesia Superior and all over Inferior.{{sfn|Georgiev|1977|p=191 map}} These regions were inhabited predominantly by tribes believed to have been Dacian-speaking, such as the [[Triballi]], [[Moesi]] and [[Getae]].

However, the dava-zone was not exclusively or uniformly Dacian-speaking during historical times. Significant Celtic elements survived there into the 2nd century AD: Ptolemy (III.8.3) lists two Celtic peoples, the [[Taurisci]] and [[Anartes]], as resident in the northernmost part of Dacia, in the northern Carpathians. The partly Celtic [[Bastarnae]] are also attested in this region in literature and the archaeological record during the 1st century BC; they probably remained in the 1st century AD, according to Batty.{{sfn|Batty|2007|p=378}}

====Other regions====
It has been argued that the zone of Dacian speech extended beyond the confines of Dacia, as defined by Ptolemy, and Moesia. An extreme view, presented by some scholars, is that Dacian was the main language spoken between the [[Baltic Sea]] and the [[Black Sea|Black]] and [[Aegean Sea|Aegean]] seas. But the evidence for Dacian as a prevalent language outside Dacia and Moesia appears inconclusive:

=====Republic of Moldova=====
To the east, beyond the Siret River, it has been argued by numerous scholars that Dacian was also the main language of the modern regions of [[Moldavia]] and [[Bessarabia]], at least as far east as the river Dniester. The main evidence used to support this hypothesis consists of three ''-dava'' placenames which Ptolemy located just east of the Siret; and the mainstream identification as ethnic-Dacian of two peoples resident in Moldavia: the [[Carpi (people)|Carpi]] and [[Costoboci]]. However, the Dacian ethnicity of the Carpi and Costoboci is disputed in academic circles, and they have also been variously identified as Sarmatian, Germanic, Celtic or proto-Slavic. Numerous non-Dacian peoples, both sedentary and nomadic, the Scytho-Sarmatian [[Roxolani]] and [[Agathyrsi]], Germanic/Celtic Bastarnae and Celtic Anartes, are attested to in the ancient sources and in the archaeological record as inhabiting this region.{{sfn|Barrington Atlas|2000|loc=Map 22}} The linguistic status of this region during the Roman era must therefore be considered uncertain. It is likely that a great variety of languages were spoken. If there was a ''lingua franca'' spoken by all inhabitants of the region, it was not necessarily Dacian: it could as likely have been Celtic or Germanic or Sarmatian.

=====Balkans=====
To the south, it has been argued that the ancient Thracian language was a dialect of Dacian, or vice versa, and that therefore the Dacian linguistic zone extended over the Roman province of Thracia, occupying modern-day Bulgaria south of the Balkan Mountains, northern Greece and European Turkey, as far as the Aegean Sea. But this theory, based on the testimony of the Augustan-era geographer Strabo's work ''Geographica'' VII.3.2 and 3.13, is disputed; opponents argue that Thracian was a distinct language from Dacian, either related or unrelated. (see [[Dacian language#Thracian|Relationship with Thracian]], below, for a detailed discussion of this issue).

=====Anatolia=====
[[File:Asia minor-Shepherd 1923.JPG|thumb|right|upright=2|Map showing the regions of ancient Anatolia, including [[Bithynia]], [[Phrygia]] and [[Mysia]]]]

According to some ancient sources, notably [[Strabo]], the northwestern section of the [[Anatolian peninsula]], namely the ancient regions of [[Bithynia]], [[Phrygia]] and [[Mysia]], were occupied by tribes of Thracian or Dacian origin and thus spoke dialects of the Thracian or Dacian languages (which, Strabo claimed, were in turn closely related). However, the link between Dacian and Thracian has been disputed by some scholars, as has the link between these two languages and Phrygian.

According to Strabo (VII.3.2) and [[Herodotus]], the people of Bithynia in northwest [[Anatolia]] originated from two Thracian tribes, the ''Bithyni'' and ''Thyni'', which migrated from their original home around the river [[Struma (river)|Strymon]] in Thrace. Therefore, they spoke the Thracian language. In addition, Strabo (VII.3.2) claims that the neighbouring [[Phrygians]] were also descended from a Thracian tribe, the ''Briges'', and spoke a language similar to Thracian. In fact, it has been established that both Bithynians and Phrygians spoke the [[Phrygian language]]. Phrygian is better documented than Thracian and Dacian, as some 200 inscriptions in the language survive. Study of these has led mainstream opinion to accept the observation of the ancient Greek philosopher [[Plato]] (''Cratylus'' 410a) that Phrygian showed strong affinities to [[Greek language|Greek]].{{sfn|Brixhe|1994}}{{sfn|Brixhe|2008|p=[https://books.google.com/books?id=J-f_jwCgmeUC&pg=PA72 72]}} Georgiev argued in one article that Phrygian originally belonged to the same IE branch as Greek and [[Ancient Macedonian language|Ancient Macedonian]] (which did not include Thracian or Dacian),{{sfn|Georgiev|1960|pp=285–297}} but later adopted the view that Phrygian constituted a separate branch of Indo-European, (also unrelated to Thracian or Dacian).{{sfn|Georgiev|1977|p=282}} This position is currently favoured by mainstream scholarship.{{sfn|Polomé|1982|p=888}}

In addition, Strabo (VII.3.2) equates the [[Moesi]] people of the Danubian basin with the ''Mysi'' ([[Mysians]]), neighbours of the Phrygians in NW Anatolia, stating that the two forms were Greek and Latin variants of the same name. The Mysians, he adds, were Moesi who had migrated to Anatolia and also spoke the Dacian language. Georgiev accepts Strabo's statement, dubbing the language of the Moesi "Daco-Mysian". However, there is insufficient evidence about either Dacian or the [[Mysian language]], both of which are virtually undocumented, to verify Strabo's claim.{{citation needed|date=August 2011}} It is possible that Strabo made a false identification based solely on the similarity between the two tribal names, which may have been coincidental.

=====Hungarian Plain=====
The hypothesis that Dacian was widely spoken to the north-west of Dacia is primarily based on the career of Dacian king Burebista, who ruled approximately between 80 and 44&nbsp;BC. According to Strabo, Burebista coalesced the Geto-Dacian tribes under his leadership and conducted military operations as far as Pannonia and Thracia. Although Strabo appears to portray these campaigns as short-term raids for plunder and to punish his enemies, several Romanian scholars have argued, on the basis of controversial interpretation of archaeological data, that they resulted in longer-term Dacian occupation and settlement of large territories beyond the dava zone.{{citation needed|date=April 2012}}

Some scholars have asserted that Dacian was the main language of the sedentary population of the [[Hungarian Plain]], at least as far as the river [[Tisza River|Tisza]], and possibly as far as the Danube. Statements by ancient authors such as [[Julius Caesar|Caesar]], Strabo and [[Pliny the Elder]] have been controversially interpreted as supporting this view, but these are too vague or ambiguous to be of much geographical value.{{full citation needed|date=August 2011}} There is little hard evidence to support the thesis of a large ethnic-Dacian population on the Plain:
# Toponyms: Ptolemy (III.7.1) provides 8 placenames for the territory of the [[Iazyges]] Metanastae (i.e. the Hungarian Plain). None of these carry the Dacian ''-dava'' suffix. At least three -''Uscenum'', ''Bormanum'' and the only one which can be located with confidence, ''Partiscum'' ([[Szeged]], Hungary)&nbsp;– have been identified as Celtic placenames by scholars.{{sfn|Muller|1883|p={{Page needed|date=October 2021}}}}
# Archaeology: Concentrations of La Tène-type cemeteries suggest that the Hungarian Plain was the scene of heavy Celtic immigration and settlement in the period 400–260 BC (see above). During the period 100&nbsp;BC&nbsp;– AD 100, the archaeology of the sedentary population of the Plain has been interpreted by some dated scholars as showing Dacian (Mocsy 1974) or Celto-Dacian (Parducz 1956) features. However, surveys of the results of excavations using modern scientific methods, e.g., Szabó (2005) and Almássy (2006), favour the view that the sedentary population of the Hungarian Plain in this period was predominantly Celtic and that any Dacian-style features were probably the results of trade.{{sfn|Almássy|2006|p=263}} Of 94 contemporaneous sites excavated between 1986 and 2006, the vast majority have been identified as probably Celtic, while only two as possibly Dacian, according to Almássy, who personally excavated some of the sites.{{sfn|Almássy|2006|pp=253 (fig. 2), 254 (fig 3)}} Almássy concludes: "In the Great Hungarian Plain, we have to count on a sporadic Celtic village network in which the Celtic inhabitants lived mixed with the people of the Scythian Age [referring to traces of an influx of Scythians during the 1st century BC], that could have continued into the Late Celtic Period without significant changes. This system consisted of small, farm-like settlements interspersed with a few relatively large villages... In the 1st century AD nothing refers to a significant immigration of Dacian people."{{sfn|Almássy|2006|p=263}} Visy (1995) concurs that there is little archaeological evidence of a Dacian population on the Plain before its occupation by the Sarmatians in the late 1st century AD.{{sfn|Visy|1995|p=280}}
# Epigraphy: Inscription AE (1905) 14 records a campaign on the Hungarian Plain by the Augustan-era general [[Marcus Vinicius (consul 19 BC)|Marcus Vinucius]], dated to 10&nbsp;BC{{sfn|Almássy|2006|p=253}} or 8&nbsp;BC{{sfn|CAH: 10|1996}} i.e. during or just after the Roman conquest of [[Pannonia]] (''bellum Pannonicum'' 14–9 BC), in which Vinucius played a leading role as governor of the neighbouring Roman province of [[Illyricum (Roman province)|Illyricum]]. The inscription states: "Marcus Vinucius...[patronymic], Consul [in 19 BC] ...[various official titles], governor of Illyricum, the first [Roman general] to advance across the river Danube, defeated in battle and routed an army of Dacians and Basternae, and subjugated the Cotini, Osi,...[missing tribal name] and Anartii to the power of the emperor Augustus and of the people of Rome."{{sfn|Epigraphik-Datenbank Clauss / Slaby EDCS}} The inscription suggests that the population of the Hungarian Plain retained their Celtic character in the time of Augustus: the scholarly consensus is that the Cotini and Anartes were Celtic tribes and the Osi either Celts or Celticised Illyrians.

=====Slovakia=====
To the north-west, the argument has been advanced that Dacian was also prevalent in modern-day [[Slovakia]] and parts of Poland. The basis for this is the presumed Dacian occupation of the fortress of [[Zemplín (region)|Zemplin]] in Slovakia in the era of Dacian king Burebista&nbsp;– whose campaigns outside Dacia have been dated c. 60 – 44&nbsp;BC&nbsp;– and Ptolemy's location of two ''-dava'' placenames on the lower Vistula River in Poland.{{citation needed|date=April 2012}}

The hypothesis of a Dacian occupation of Slovakia during the 1st century BC is contradicted by the archaeological evidence that this region featured a predominantly Celtic culture from c. 400&nbsp;BC;{{sfn|Bazovski|2008}} and a sophisticated kingdom of the [[Boii]] Celtic tribe. Based in modern-day [[Bratislava]] during the 1st century BC, this polity issued its own gold and silver coinage (the so-called "[[Biatec]]-type" coins), which bear the names of several kings with recognised Celtic names. This kingdom is also evidenced by numerous Celtic-type [[oppidum|fortified hill-top settlements]] (''oppida''), of which Zemplin is the foremost example in south-east Slovakia. Furthermore, the archaeological [[Puchov culture]], present in Slovakia in this period, is considered Celtic by mainstream scholars.{{sfn|Bazovski|2008}} Some scholars argue that Zemplin was occupied by Burebista's warriors from about 60&nbsp;BC onwards, but this is based on the presence of Dacian-style artefacts alongside the Celtic ones, which may simply have been cultural imports. But even if occupation by Dacian troops under Burebista actually occurred, it would probably have been brief, as in 44&nbsp;BC Burebista died and his kingdom collapsed and split into 4 fragments. In any case, it does not follow that the indigenous population became Dacian-speakers during the period of Dacian control. Karol Pieta's discussion of the ethnicity of the Puchov people shows that opinion is divided between those who attribute the culture to a Celtic group&nbsp;– the Boii or [[Cotini]] are the leading candidates&nbsp;– and those who favour a Germanic group, e.g., the [[Buri (Germanic tribe)|Buri]]. Despite wide acknowledgement of Dacian influence, there is little support for the view that the people of this region were ethnic Dacians.{{sfn|Pieta|1982|pp=204–209}}

=====Poland=====
The hypothesis of a substantial Dacian population in the river Vistula basin is not widely supported among modern scholars, as this region is generally regarded as inhabited predominantly by Germanic tribes during the Roman imperial era, e.g., Heather (2009).{{sfn|Heather|2009|p=620 (map)}}{{sfn|Barrington Atlas|2000|loc=Map 19}}{{sfn|Tacitus|p=43}}{{sfn|Ptolemy|loc=II.10; III.7}}

=== The fate of Dacian ===
From the earliest times that they are attested, Dacians lived on both sides of Danube{{sfn|Strabo Geography}}<ref>Dio Cassius LI, 22, 6</ref> and on both sides of the Carpathians, evidenced by the northern Dacian town [[Setidava]]. It is unclear exactly when the Dacian language became extinct, or whether it has a living descendant. The first Roman conquest of part of Dacia did not extinguish the language, as Free Dacian tribes may have continued to speak Dacian in the area north-east of the Carpathians as late as the 6th or 7th century AD.{{Citation needed|date=September 2011}} According to one hypothesis, a branch of Dacian continued as the Albanian language ([[Bogdan Hasdeu|Hasdeu]], 1901). Another hypothesis (Marius A.) considers Albanian to be a Daco-Moesian dialect that split off from Dacian before 300&nbsp;BC and that Dacian itself became extinct.{{Citation needed|date=April 2012}} However, mainstream scholarship considers Albanian to be a descendant of the [[Illyrian language]]{{Citation needed|date=September 2019}} and not a dialect of Dacian.{{sfn|Polomé|1982|p=888}} In this scenario, Albanian/Romanian cognates are either Daco-Moesian loanwords acquired by Albanian, or, more likely, Illyrian loanwords/[[Substrate in Romanian|substrate words]] acquired by Romanian.{{Citation needed|date=April 2012}}

The argument for a split before 300&nbsp;BC is that inherited Albanian words (e.g. Alb ''motër'' 'sister' < Late IE *''ma:ter'' 'mother') show the transformation Late IE /aː/ > Alb /o/, but all the Latin loans in Albanian having an /aː/ show Latin /aː/ > Alb a. This indicates that the transformation PAlb /aː/ > PAlb /o/ happened and ended before the Roman arrival in the Balkans. However, Romanian substratum words shared with Albanian show a Romanian /a/ that corresponds to an Albanian /o/ when the source of both sounds is an original common /aː/ (''mazăre / modhull'' < *''maːdzula'' 'pea', ''rață / rosë'' < *''raːtjaː'' 'duck'), indicating that when these words had the same common form in Pre-Romanian and Proto-Albanian, the transformation PAlb /aː/ > PAlb /o/ had not yet begun.{{citation needed|date=September 2011}} The correlation between these two theories indicates that the hypothetical split between the pre-Roman Dacians, who were later Romanised, and Proto-Albanian happened before the Romans arrived in the Balkans.{{citation needed|date=September 2011}}

==== Extinction ====
According to Georgiev, Daco-Moesian was replaced by Latin as the everyday language in some parts of the two Moesiae during the Roman imperial era, but in others, for instance Dardania in modern-day southern Serbia and northern North Macedonia, Daco-Moesian remained dominant, although heavily influenced by eastern Balkan Latin.{{sfn|Georgiev|1977|p=287}}{{Clarify|reason=So it did not become extinct? Does that mean it became the ancestor of Albanian?|date=October 2012}} The language may have survived in remote areas until the 6th century.{{sfn|Du Nay|1977|p=262}}{{Clarify|reason=So did it become extinct or not?|date=October 2012}} Thracian, also supplanted by Latin, and by Greek in its southern zone, is documented as a living language in approximately 500&nbsp;AD.{{sfn|Jones|1964|p=998}}

== Sound changes from Proto-Indo-European ==
Phonologically Dacian is a conservative [[Indo-European]] (IE) language.{{Citation needed|date=September 2011}} From the remaining fragments, the sound changes from [[Proto-Indo-European]] (PIE) to Dacian can be grouped as follows:{{Citation needed|date=September 2011}}

{{fix|text=Present alternative views: some sound changes below are controversial|date=September 2011}}

===Short vowels===
# PIE '''*a''' and '''*o''' appear as '''a'''.
# PIE accented '''*e''', appears as '''ye''' in open syllable or '''ya''' in closed ones. Otherwise, PIE un-accented '''*e''' remains '''e'''.
# PIE '''*i''' was preserved in Dacian as '''i'''.

===Long vowels===
# PIE '''*ē''' and '''*ā''' appear as '''*ā'''
# PIE '''*ō''' was preserved as '''*ō'''

===Diphthongs===
# PIE '''*ai''' was preserved as '''*ai'''
# PIE '''*oi''' appears in Dacian as '''*ai'''
# PIE '''*ei''' evolution is not well reconstructed yet. It appears to be preserved to '''ei''' or that already passed to '''i'''.
# PIE '''*wa''' was preserved as '''*wa'''.
# PIE '''*wo''' appears as '''*wa'''.
# PIE '''*we''' was preserved as '''*we'''.
# PIE '''*wy''' appears as '''*vi'''.
# PIE '''*aw''' was preserved as '''*aw'''.
# PIE '''*ow''' appears as '''*aw'''.
# PIE '''*ew''' was preserved as '''*ew'''.

===Consonants===
Like many IE stocks, Dacian merged the two series of voiced stops.
# Both '''*d''' and '''*d<sup>h</sup>''' became '''d''',
# Both '''*g''' and '''*g<sup>h</sup>''' became '''g'''
# Both '''*b''' and '''*b<sup>h</sup>''' became '''b'''
# PIE '''*ḱ''' became '''ts'''
# PIE '''*ǵ''' became '''dz'''
# PIE '''*kʷ''' when followed by '''e''', '''i''' became '''t̠ʃ'''. Otherwise became '''k'''. Same fate for PIE cluster '''*kw'''.
# PIE '''*gʷ''' and '''*gʷ<sup>h</sup>''' when followed by '''e''' or '''i''' became '''d̠ʒ'''. Otherwise became '''g'''. Same fate for PIE cluster '''*gw'''
# PIE '''*m''', '''*n''', '''*p''', '''*t''', '''*r''', '''*l''' were preserved.

Note: In the course of the diachronic development of Dacian, a palatalisation of k and g appears to have occurred before front vowels according to the following process{{sfn|Polomé|1982|p={{Page needed|date=October 2021}}}}
* k > {{IPA|[kj] > [tj] > [tʃ] ~ [ts]}} {{angbr|ts}} or {{angbr|tz}} > {{IPA|[s] ~ [z]}} {{angbr|z}}, e.g.: *ker(s)na is reflected by Tierna (Tabula Peutingeriana) Dierna (in inscriptions and Ptolemy), *Tsierna in station Tsiernen[sis], AD 157, Zernae (notitia Dignitatum), (colonia) Zernensis (Ulpian){{sfn|Polomé|1982|p={{Page needed|date=October 2021}}}}
* g > {{IPA|[ɡj] > [dj] > [dz] ~ [z]}} {{angbr|z}}, e.g.: Germisara appears as Γερμιζερα, with the variants Ζερμιζίργα, Ζερμίζιργα{{sfn|Polomé|1982|p={{Page needed|date=October 2021}}}}

==Vocabulary==
===Place names===
{{Main|Davae}}

Ptolemy gives a list of 43 names of towns in Dacia, out of which arguably 33 were of Dacian origin. Most of the latter included the suffix ''-dava'', meaning settlement or village. But, other Dacian names from his list lack the suffix, for example Zarmisegethusa regia = Zermizirga, and nine other names of Dacian origin seem to have been Latinised.{{sfn|Oltean|2007|p=114}}

The Dacian linguistic area is characterised mainly with composite names ending in ''-dava'', or variations such as ''-deva'', ''-daua'', ''-daba'', etc. The settlement names ending in these suffixes are geographically grouped as follows:{{citation needed|date=April 2012}}
* In Dacia: [[Acidava]], [[Argedava]], [[Argidava]], [[Buridava]], [[Cumidava]], Dokidaua, Karsidaua, Klepidaua, Markodaua, Netindaua, Patridaua, Pelendova, *Perburidava, Petrodaua, Piroboridaua, Rhamidaua, Rusidava, Sacidaba, Sangidaua, [[Setidava]], Singidaua, Sykidaba, Tamasidaua, Utidaua, Zargidaua, [[Ziridava]], Zucidaua&nbsp;– 26 names altogether.
* In [[Lower Moesia]] (the present northern [[Bulgaria]]) and [[Scythia Minor (Dobruja)|Scythia Minor]] ([[Dobruja]]): [[Aedabe]], *Buteridava, *Giridava, Dausdavua, Kapidaua, Murideba, Sacidava, Scaidava (Skedeba), Sagadava, Sukidaua (Sucidava)&nbsp;– 10 names in total.
* In [[Upper Moesia]] (the present districts of Nish, Sofia, and partly Kjustendil): [[Aiadaba]], Bregedaba, Danedebai, Desudaba, Itadeba, Kuimedaba, Zisnudeba&nbsp;– 7 names in total.

Besides these regions, similar village names are found in three other places:
* Thermi-daua (Ptolemy), a town in [[Dalmatia]], a Grecised form of *Germidava. This settlement was probably founded by immigrants from Dacia.
* Gil-doba—a village in [[Thrace]], of unknown location.
* Pulpu-deva in Thrace—today [[Plovdiv]] in Bulgaria.

A number of Dacian settlements do not have the ''-dava'' ending or variant suffix. Some of these are: [[Acmonia, Dacia|Acmonia]], [[Aizis]], [[Amutria]], [[Apulon]], [[Arcina (Dacia)|Arcina]], [[Arcobadara]], [[Arutela]], [[Berzovia|Berzobis]], [[Brucla]], [[Diacum]], [[Dierna (Dacia)|Dierna]], [[Dinogetia]], [[Drobeta (ancient city)|Drobeta]], [[Egeta]], [[Isaccea|Genucla]], [[Romula|Malva]] (Romula), [[Napoca (ancient city)|Napoca]], [[Oescus]], [[Patruissa (Dacia)|Patruissa]], [[Pinon, Dacia|Pinon]], [[Potaissa]], [[Ratiaria]], [[Sarmizegetusa Regia|Sarmizegetusa]], [[Tapae]], [[Tibiscum]], [[Tirista (Dacia)|Tirista]], [[Tsierna]], [[Tyrida]], [[Zaldapa]], [[Zeugma, Dacia|Zeugma]] and [[Zurobara]].{{citation needed|date=April 2012}}

===Tribal names===
{{See also|List of Dacian tribes}}

In the case of Ptolemy's Dacia, most of the tribal names are similar to those on the list of [[civitas|civitates]], with few exceptions.{{sfn|Oltean|2007|p=46}} Georgiev counts the Triballi, the Moesians and the Dardanians as Daco-Moesians.{{sfn|Papazoglu|1978|p=78}}{{sfn|Georgiev|1981|p=150}}

===Plant names===
{{Expand section|date=March 2011}}
{{Main|List of Dacian plant names}}
[[File:Dioscorides De Materia Medica Byzantium 15th century.jpg|thumb|right|[[Dioscorides]], ''[[De Materia Medica (Dioscorides)|De Materia Medica]]'', [[Byzantium]], 15th century.]]

In ancient literary sources, the [[List of Dacian plant names|Dacian names]] for a number of medicinal plants and herbs survive in ancient texts,{{sfn|Dioscorides}}{{sfn|Pseudo-Apuleius}} including about 60 plant names in Dioscorides.{{sfn|Price|1998|p=120}} The Greek physician [[Pedanius Dioscorides]], of [[Anazarbus]] in Asia Minor, wrote the medical textbook ''[[De Materia Medica (Dioscorides)|De Materia Medica]]'' ({{langx|grc|Περὶ ὕλης ἰατρικῆς}}) in the mid-1st century AD. In Wellmann's opinion (1913), accepted by Russu (1967), the Dacian plant names were added in the 3rd century AD from a glossary published by the Greek grammarian [[Pamphilus of Alexandria|Pamphilus of Alexandria (1st century AD)]].{{sfn|Russu|1967|p=45}} The Dacian glosses were probably added to the [[Pseudo-Apuleius]] texts by the 4th century. The mixture of indigenous Dacian, Latin and Greek words in the lists of Dacian plant names may be explained by a linguistic crossing process occurring in that period.{{sfn|Rosetti|Graur|1969|p=315}}

Although many Dacian toponyms have uncertain meanings, they are more reliable as sources of Dacian words than the names of medicinal plants provided by Dioscorides, which have led to speculative identifications: out of 57 plants, 25 identifications may be erroneous, according to Asher & Simpson.{{sfn|Asher|Simpson|1994|p=1665}} According to the Bulgarian linguist Decev, of the 42 supposedly Dacian plant names in Dioscorides only 25 are truly Dacian, while 10 are Latin and 7 Greek. Also, of the 31 "Dacian" plant names recorded by Pseudo-Apuleius, 16 are really Dacian, 9 are Latin and 8 are Greek.{{sfn|Rosetti|Graur|1969|p=315}}

Examples of common Dacian, Latin and Greek words in [[Pseudo-Apuleius]]:
* Dacian ''blis'' and Latin ''blitum'' (from Greek ''bliton'' for [[purple amaranth]]{{sfn|Poghirc|1986|p=348}}
* Dacian ''amolusta'' and [[Oscan language|Campanian]] ''amolocia'' for [[chamomile]]{{sfn|Poghirc|1986|p=348}}{{sfn|Pelletier|1985|p=81|loc=Campani amolocia Tusci abiana Daci amolusta (Pseudo-Apuleius, 23)}}
* Dacian ''dracontos'' and [[Italic languages|Italic]] ''dracontes'' for [[rosemary]]{{sfn|Poghirc|1986|p=348}}

===Reconstruction of Dacian words===
{{Main|List of reconstructed Dacian words}}

Both Georgiev and Duridanov use the [[comparative method|comparative linguistic method]] to decipher ancient Thracian and Dacian names, respectively. Georgiev (1977) argues that the meaning of an ancient placename in an unknown language can be deciphered by comparing it to its successor-names and to cognate placenames and words in other Indo-European languages, both ancient and modern. Georgiev considers decipherment by analysis of root-words alone to be devoid of scientific value.<ref>Georgiev (1976) 276</ref> He gives several examples of his methodology, one of which refers to a town and river (a tributary of the Danube) in eastern Romania called [[Cernavodă]], which in Slavic means "black water". The same town in antiquity was known as ''Ἀξίοπα'' (''Axiopa'') or ''Ἀξιούπολις'' (''Axioupolis'') and its river as the ''Ἀξιός'' (''Axios''). The working assumption is that ''Axiopa'' meant "black water" in Dacian, on the basis that Cernavodă is probably a [[calque]] of the ancient Dacian name.{{sfn|Polomé|1982|p=879}} According to Georgiev, the likely IE root-word for ''Axios'' is *''n̥-ks(e)y-no'' ("dark, black" cf. [[Avestan]] ''axsaena'').{{sfn|Georgiev|1981|p=109}} On the basis of the known rules of formation of IE composite words, Axiopa would break down as ''axi'' = "black" and ''opa'' or ''upa'' = "water" in Dacian; the ''-polis'' element is ignored, as it is a Greek suffix meaning "city". The assumption is then validated by examining cognate placenames. There was another Balkan river also known in antiquity as ''Axios'', whose source was in the Dacian-speaking region of [[Moesia]]: its modern [[Macedonian language|Macedonian]] name is ''[[Crna River (Vardar)|Crna reka]]'' (Slavic for "black river"): although it was in [[Dardani]]a (Rep. of North Macedonia), a mainly Illyrian-speaking region. Georgiev considers this river-name to be of Daco-Moesian origin. The ''axi'' element is also validated by the older Greek name for the [[Black Sea]], ''Ἄξεινος πόντος''&nbsp;– ''Axeinos pontos'', later altered to the euphemism Εὔξεινος πόντος ''Euxeinos pontos'' meaning "Hospitable sea". The ''opa/upa'' element is validated by the Lithuanian cognate ''upė'', meaning "water").{{sfn|Georgiev|1977|p=277}} The second component of the town's name *''-upolis'' may be a diminutive of *''upa'' cf. Lithuanian diminutive ''upelis''.{{sfn|Polomé|1982|p=879}}{{dubious|date=September 2011}}

[N.B. This etymology was questioned by Russu: ''Axiopa'', a name attested to only in [[Procopius]]' ''De Aedificiis'', may be a corrupted form of ''[[Axiopolis]]''.<ref>See {{harvnb|Russu|1963|p=131}} and {{harvnb|Russu|1969|p=76}}. Ἀξιό<sup>πλ</sup> is an abbreviation for Axiopolis in the manuscripts of ''De Aedificiis''.</ref> However, even if correct, Russu's objection is irrelevant: it does not affect the interpretation of the ''axi-'' element as meaning "black", or the ''upa'' as meaning "water" cf. placename ''Scenopa''. Fraser (1959) noted that the root ''axio'' that occurs in the place-name ''Axiopa'' is also found in [[Samothrace]] and in [[Sparta]], where [[Athena Axiopoina]] was worshiped. Therefore, he considers this pre-Greek root to be of Thracian origin, meaning "great".{{sfn|Fraser|1959|p=28}} However, there is no certainty that the ''axi'' element in Greece was of Thracian (as opposed to Greek or other language), or that it meant "great" rather than "black". In any case, this objection may not be relevant, if Thracian was a separate language to Dacian].

Some linguists are skeptical of this reconstruction methodology of Dacian. The phonetic systems of Dacian and Thracian and their evolution are not reconstructed directly from indigenous elements but from their approximative Greek or Latin transcripts.{{sfn|Fisher|2003|p=570}}{{sfn|Polomé|1982|p=885}} Greek and Latin had no dedicated graphic signs for phonemes such as č, ġ, ž, š and others. Thus, if a Thracian or Dacian word contained such a phoneme, a Greek or Latin transcript would not represent it accurately.{{sfn|Paliga|1986|p=120}} The etymologies that are adduced to back up the proposed Dacian and Thracian vowel and consonant changes, used for word reconstruction with the comparative method, are open to divergent interpretations because the material is related to place names, with the exception of Dacian plant names and the limited number of glosses.{{sfn|Polomé|1982|pp=878–879}} Because of this, there are divergent and even contradictory assumptions for the phonological structure and development of the Dacian and Thracian languages.{{sfn|Polomé|1982|pp=878–879}} It is doubtful that the Dacian phonological system has been accurately reproduced by Greek or Latin transcripts of indigenous lexica.{{sfn|Panayotou|2007|p=742}}

In the case of personal names, the choice of the etymology is often a matter of compliance with assumed phonological rules.{{sfn|Polomé|1982|p=881}} Since the geographical aspect of the occurrence of sound changes (i.e. o > a) within Thracian territory, based on the work of [[Vladimir I. Georgiev|V. Georgiev]], began to be emphasised by some researchers, the chronological aspect has been somewhat neglected.{{sfn|Poghirc|1989|p=297}} There are numerous cases where lack of information has obscured the vocalism of these idioms, generating the most contradictory theories.{{sfn|Poghirc|1989|p=306}} Today, some 3,000 Thraco-Dacian lexical units are known. In the case of the oscillation *o / *a, the total number of words containing it is about 30, many more than the ones cited by both Georgiev and Russu, and the same explanation is not valid for all of them.{{sfn|Poghirc|1989|p=298}}

In 2024, [[Robert Eggers]]' [[Nosferatu (2024 film)|remake of Nosferatu]] utilized Dacian in several instances of [[Count Orlok|Count Orlok's]] dialogue (played by [[Bill Skarsgård]]).<ref>{{Cite web |last=Truitt |first=Brian |title='Nosferatu' star Bill Skarsgård embraced opera to get his vampire voice right |url=https://www.usatoday.com/story/entertainment/movies/2024/12/30/bill-skarsgard-nosferatu-vampire/77158565007/ |access-date=2025-01-05 |website=USA TODAY |language=en-US}}</ref><ref>{{Cite web |date=2025-01-03 |title=Robert Eggers' Nosferatu resurrected a real, dead language for Bill Skarsgård's undead Count Orlok to speak |url=https://www.thepopverse.com/movies-nosferatu-count-orlok-bill-skarsgard-voice-robert-eggers |access-date=2025-01-05 |website=Popverse |language=en}}</ref> This was done with the consultation of Romanian screenwriter [[:ro:Florin_Lăzărescu|Florin Lăzărescu]].<ref>{{Cite web |last=Connellan |first=Shannon |date=2024-12-25 |title='Nosferatu' review: Is Robert Eggers' remake a blessing or a curse? |url=https://mashable.com/article/nosferatu-review |access-date=2025-01-05 |website=Mashable |language=en}}</ref>

==See also==
; List articles
* [[List of ancient cities in Thrace and Dacia]]
* [[List of Dacian kings]]
* [[List of Dacian names]]
* [[List of Dacian plant names]]
* [[List of Dacian towns]]
* [[List of reconstructed Dacian words]]
* [[Substrate in Romanian]]
; Other articles
* [[Albanian language]]
* [[Daco-Thracian]]
* [[Davae]]
* [[Megleno-Romanian language]]
* [[Thracian language]]
* [[Thraco-Roman]]
* [[Paleo-Balkan languages]]
* [[Phrygian language]]
* [[Scythian languages]]
* [[Sinaia lead plates]]

==Notes==
===Footnotes===
{{notelist}}

===Citations===
{{Reflist|22em}}

==Works cited==
===Ancient===
{{refbegin}}
*{{cite book| title = [[De materia medica]]
 | editor-last = Dioscorides | editor-first = Pedanius | editor-link = Pedanius Dioscorides
 | orig-year = c. AD 80
}}
*{{cite book| title = [[Natural History (Pliny)|Natural history]] Volume 2, Issues 3–7
 | last = Pliny | first = the elder | year = 2000
 | author-link = Pliny the Elder
 | orig-year = 77–79 AD
 | publisher = [[Harvard University Press]]
 | ref = {{harvid|Pliny the Elder}}
}}
*{{cite book| title = De Herbarum Virtutibus
 | editor = Pseudo-Apuleius | editor-link = Pseudo-Apuleius
 | orig-year = 5th century
}}
*{{cite book| title = [[Geographia]]
 | editor = Ptolemy | editor-link = Ptolemy
 | orig-year = c. 140
}}
*{{cite book| title = [[Geographica]]
 | last = Strabo
 | author-link = Strabo
 | orig-year = c. AD 20
}}
*{{cite book| title = [[Germania (book)|Germania]]
 | editor = Tacitus | editor-link = Tacitus
 | orig-year = c. 100
}}
*{{Cite book| title = [[Histories (Tacitus)|Histories]]
 | last = Tacitus
 | author-link = Tacitus
 | orig-year = c. 100–110
 | ref = {{harvid|Tacitus, Histories}}
}}
{{refend}}

===Modern===
{{refbegin|30em}}
*{{cite book| title = Academic American encyclopedia
 | publisher = Grolier Incorporated
 | year = 1994
 | volume = 10 | page = 198
 | isbn = 978-0-7172-2053-3
 | ref = {{harvid|''Academic American encyclopedia''|1994}}
}}
*{{cite book
 | chapter = Celts and Dacians(?) In the Great Hungarian Plain 1st c. BC to 1st c. AD
 | last = Almássy
 | first = Katalin
 | year = 2006
 | title = Mitteleuropa in Zeit Marbods
 | editor1-last = Salac
 | editor1-first = V.
 | editor2-last = Bemman
 | editor2-first = J.
 | chapter-url = http://www.archaeology.ru/Download/Almassy/Almassy_2009_Celts.pdf
 }}
*{{cite journal | title = Tribal Territories of the Baltic People in the Hallstatt – La Tène and Roman Periods in the Light of Archaeology and Toponymy
 | last = Antoniewicz | first = Jerzy
 | journal = Acta Baltico-Slavica
 | year = 1966 | volume = 4–5
}}
*{{Cite book| title = Language Contact and Bilangualism
 | last1 = Appel | first1 = René
 | last2 = Muysken | first2 = Pieter
 | year = 2006
 | publisher = Amsterdam University Press
 | isbn = 978-90-5356-857-6
}}
*{{cite book| title = Bulgarian in Handbuch der Südosteuropa-Linguistik
 | last = Asenova | first = Petja | year = 1999
 | publisher = Wiesbaden, Harrassowitz
 | isbn = 978-3-447-03939-0
}}
*{{cite book
 | title = The Encyclopedia of Language and Linguistics
 | last1 = Asher
 | first1 = R. E.
 | last2 = Simpson
 | first2 = J. M. Y.
 | author1-link = Ronald E. Asher
 | year = 1994
 | publisher = Pergamon Press
 | volume = 3
 | url = https://books.google.com/books?id=oT9iAAAAMAAJ&pg=PP1
 | isbn = 978-0-08-035943-4
 }}
*{{cite book| title = The New Century handbook of classical geography
 | last = Avery | first = Catherine | year = 1972
 | publisher = Appleton-Century-Crofts
}}
*{{cite book| title = An Introduction to the Indo-European Languages
 | last = Baldi | first = Philip | year = 1983
 | author-link = Philip Baldi
 | publisher = Southern Illinois University Press
 | isbn = 978-0-8093-1091-3
}}
*{{Cite book| title = Rome and the Nomads. The Pontic-Danubian Realm in Antiquity
 | last = Batty | first = Roger | year = 2007
 | publisher = Oxford University Press
 | isbn = 978-019814936-1
}}
*{{citation| title = Celts, the Iron Age Warriors
 | last = Bazovski | first = Igor
 | publisher = SNM (Slovak National Museum)
 | type = summary of review
 | date = 2008
}}
*{{cite journal
 | title = The Beginnings of the History of the Romanian People
 | journal = Anale de Istorie
 | year = 1976
 | issue = 4
 | url = https://books.google.com/books?id=0LZVAAAAYAAJ
 | issn = 1010-5506
 | ref = {{harvid|Anale de Istorie|1976}}
 }}{{page needed|date=October 2021}}
*{{cite book| title = A History of the Habsburg Empire 1273–1700
 | last = Berenger | first = Jean | year = 1994
 | author-link = Jean Bérenger
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}}
*{{cite book| title = Mostenirea timpurilor indepartate
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 | year = 2001
 | publisher = Editura Enciclopedica
 | language = ro
 | isbn = 978-973450381-0
}}
*{{cite book| title = Thracians and Mycenaeans: Proceedings of the Fourth International Congress of Thracology Rotterdam, 24–26 September 1984
 | editor1-last = Best | editor1-first = Jan G. P. | editor1-link = Jan G. P. Best
 | editor2-last = de Vries | editor2-first = Nanny M. W.
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}}
*{{Cite book| title = History and Myth in Romanian Consciousness
 | last = Boia | first = Lucian | year = 2001
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}}
*{{cite book
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 | last1 = Bolovan
 | first1 = Ioan
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 | last5 = Popa
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*{{Cite book| title = A Historical Commentary on Arrian's History of Alexander Volume 1: Commentary on Books I-III
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}}
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 | year = 1996
 | publisher = Cambridge University Press
 | volume = 10
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}}
*{{cite book| chapter = Le Phrygien
 | last = Brixhe | first = Claude | year = 1994
 | title = Langues indo-européennes
 | editor-last = Bader | editor-first = Fr
 | publisher = CNRS Éditions | place = Paris
 | language = fr
 | pages = 165–178
 | isbn = 978-227105043-4
}}
*{{cite book
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 | last = Brixhe
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 }}
*{{cite book| title = A short history of Romania
 | last = Bulei | first = Ion | year = 2005
 | publisher = Bucharest; Meronia Publishers
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}}
*{{cite book| title = A history of ancient geography among the Greeks and Romans: from the earliest ages till the fall of the Roman Empire
 | last = Bunbury | first = Sir Edward Herbert | year = 1979
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 | orig-year = First published 1883
 | publisher = J. C. Gieben
 | volume = 2
}}
*{{cite book| title = Historical Linguistics
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}}
*{{Cite book| title = Concise Compendium of the World's Languages
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}}
*{{cite book| title = Kontakt, Kooperation, Konflikt: Germanen und Sarmaten zwischen dem 1. und dem 4. Jahrhundert nach Christus
 | last = Carnap-Bornheim | first = Claus | year = 2003
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}}
*{{cite book
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 }}
*{{cite web
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*{{cite book| chapter = Linguistic problems of the Balkan area in the late prehistoric and early Classical period
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}}
*{{cite book| title = Dacii
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 | publisher = Editura Enciclopedică Română
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*{{cite web
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*{{Cite book
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*{{cite book|last=Demiraj|first=Shaban|title=The origin of the Albanians (linguistically investigated)|url=https://books.google.com/books?id=aXIbAQAAIAAJ|date=2006|location=Tirana|publisher=[[Academy of Sciences of Albania]]|isbn=978-99943-817-1-5}}
* {{cite book
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|title         = Dějiny československého území před vystoupením Slovanů
|year       = 1964
|publisher = Nakl. Československé akademie věd 
}}
*{{cite book | title = The early history of the Rumanian language | last = Du Nay | first = André | year = 1977 | url = https://archive.org/details/earlyhistoryofru0000duna | url-access = registration | via = [[Internet Archive]] | isbn = 978-093310403-7 }}
*{{cite book| chapter = The Prehistory of Romania: from the earliest times to 1000 B.C
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 | year = 1982
 | title = The Cambridge Ancient History
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 | volume = 3
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}}
*{{cite book| title = Die Thrakisch- und Dakisch-Baltischen Sprachbeziehungen
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}}
*{{Cite book| script-title = bg:Езикът на Траките
 | trans-title = The language of the Thracians
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}}
*{{cite book| title = Die Sprache der Thraker
 | trans-title = The language of the Thracians
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*{{Cite book
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*{{cite book| title = Some Indo-European Speaking Groups of the Middle. Danube and the Balkans: Their Boundaries as Related to Cultural Geography Through Time
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}}
*{{cite book| title = Les substrats et leur influence sur les langues romanes: la Romania du Sud-Est / Substrate und ihre Wirkung auf die romanischen Sprachen: Sudostromania in Romanische Sprachgeschichte
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 | publisher = Mouton De Gruyter
 | language = fr
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}}
*{{cite book| title = ''Thracians, Celts, Illyrians and Dacians'' in History of Humanity: From Seventh Century B.C. to the Seventh Century A.D
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}}
*{{cite book| title = Samothrace: no. 1. The inscriptions on stone edited by Karl Lehmann, Phyllis Williams Lehmann
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 | year = 1959
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}}
*{{cite book|last=Friedman|first=Victor A.|title=The Routledge Handbook of Language Contact|chapter=The Balkans|series=Routledge Handbooks in Linguistics|editor=[[Evangelia Adamou]], [[Yaron Matras]]|publisher=Routledge|year=2020|isbn=9781351109147|pages=385–403 |url=https://books.google.com/books?id=x4rvDwAAQBAJ}}
*{{cite book|last=Friedman|first=Victor|title=The Cambridge Handbook of Language Contact: Volume 1: Population Movement and Language Change|series=Cambridge Handbooks in Language and Linguistics|chapter=The Balkans|editor=Salikoko Mufwene, Anna Maria Escobar|publisher=Cambridge University Press|year=2022|isbn=9781009115773|url=https://books.google.com/books?id=jWB2EAAAQBAJ}}
*{{cite journal | title = Raporturile dintre limbile dacă, tracă şi frigiană
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 | year = 1960 | volume = II | pages = 39–58
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}}
*{{cite book| chapter = The Earliest Ethnological Situation of the Balkan Peninsula as Evidenced by Linguistic and Onomastic Data
 | last = Georgiev | first = Vladimir | year = 1972
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}}
*{{cite book
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 | trans-title = The Thracians and their language
 | last = Georgiev
 | first = Vladimir
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 | publisher = Izdatelstvo na Bălgarskata Akademija na naukite
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*{{cite book| title = Introduction to the history of the Indo-European languages
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}}
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}}
*{{cite book| title = Cultivated plants and domesticated animals in their migration from Asia to Europe: historico-linguistic studies
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}}; originally ''Culturpflanzen und Haustiere in ihrem Übergang aus Asien nach Griechenland und Italien sowie das übrige Europa: Historisch-linguistische Skizzen''. Berlin: Gebr. Borntraeger, 1885
*{{cite book| chapter = Thracians, Mycenaeans and 'The Trojan Question'
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}}
*{{cite book| title = History of Ukraine-Rus'
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}}
*{{cite book|last1=Hyllested|first1=Adam|last2=Joseph|first2=Brian D.|editor1-last=Olander |editor1-first=Thomas|title=The Indo-European Language Family : A Phylogenetic Perspective|year=2022|doi=10.1017/9781108758666|publisher=Cambridge University Press|isbn=9781108758666|chapter=Albanian|chapter-url=https://books.google.com/books?id=xzKAEAAAQBAJ&pg=PA223|pages=223–245|s2cid=161016819 |url=https://directory.doabooks.org/handle/20.500.12854/143059 }}
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*{{cite book| title = The Archaeology of Roman Pannonia
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 | year = 1980
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}}
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}}
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}}
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 | publisher = Picard | location = Paris
 | language = fr
 | isbn = 978-270840115-0
}}
*{{cite book| title = Scurta istorie a Daciei Preromane
 | last = Petrescu-Dîmbovița | first = Mircea | year = 1978
 | publisher = Junimea
}}
*{{cite book| title = Die Puchov Kultur
 | last = Pieta | first = Karol | year = 1982
 | publisher = Archäologisches Institut der Slowakischen Akademie der Wissenschaften zu Nitra
 | pages = 204–209
}}
*{{Cite book| title = Philologica et linguistica: ausgewählte Aufsätze (1953–1983)
 | last = Poghirc | first = Cicerone | year = 1983
 | editor-last = Frisch | editor-first = Helmut
 | publisher = N. Brockmeyer
 | isbn = 388339356-8
}}
*{{cite conference
 | book-title = Linguistique générale et linguistique romane: histoire de la grammaire: actes du XVIIe Congrès international de linguistique et philologie romanes, Aix-en-Provence, 29 août-3 septembre 1983
 | title = Dioscoride et Pseudo-Apulee Temoins des debuts de la differenciation dans la Romania
 | last = Poghirc | first = Cicerone | year = 1986
 | language = fr
 | publisher = Wechselnde Verleger
}}
*{{cite book| chapter = Considerations chrono-geographiques sur l'oscillation a/o en Thrace et en Daco-Mesien
 | last = Poghirc | first = Cicerone | year = 1989
 | title = Thracians and Mycenaeans: Proceedings of the Fourth International Congress of Thracology Rotterdam, 24–26 September 1984
 | editor1-last = Best | editor1-first = Jan G. P. | editor1-link = Jan G. P. Best
 | editor2-last = de Vries | editor2-first = Nanny M. W.
 | publisher = Brill Academic
 | isbn = 978-90-04-08864-1
}}
*{{cite book| chapter = Balkan Languages (Illyrian, Thracian and Daco-Moesian)
 | last = Polomé | first = Edgar C. | year = 1982
 | author-link = Edgar C. Polomé
 | title = Cambridge Ancient History | edition = 2nd
 | editor-last = Boardman | editor-first = John
 | series = Volume 3, Part 1, The Prehistory of the Balkans, the Middle East and the Aegean World, Tenth to Eighth Centuries BC
 | pages = 866–888
 | isbn = 978-0-521-22496-3
}}
*{{cite book| chapter = The Linguistic Situation in the Western Provinces of the Roman Empire
 | last = Polomé | first = Edgar C. | year = 1983
 | author-link = Edgar C. Polomé
 | title = Sprache Und Literatur (Sprachen Und Schriften)
 | editor-last = Haase | editor-first = Wolfgang
 | publisher = Walter de Gruyter
 | pages = 509–553
 | isbn = 978-3-11-009525-8
}}
*{{cite book
 | title = The History of Transylvania: Until 1541
 | editor1-last = Pop
 | editor1-first = Ioan Aurel
 | editor2-last = Nägler
 | editor2-first = Thomas
 | year = 2005
 | publisher = Romanian Cultural Institute
 | url = https://books.google.com/books?id=96IsAQAAIAAJ&pg=PP1
 | isbn = 978-973-7784-00-1
 }}
*{{cite book
 | title = Rumänien in seinen geographischen und kartographischen Quellen: vom Altertum bis an die Schwelle unseres Jahrhunderts
 | trans-title = Romania in geographical and cartographic sources from ancient times to the turn of our century
 | last = Popescu-Spineni
 | first = Marin
 | year = 1987
 | publisher = O. Harassowitz
 | language = de
 | url = https://books.google.com/books?id=0JomAAAAMAAJ&pg=PP1
 | isbn = 978-3-447-02582-9
 }}
*{{cite journal | title = Introduzione alia storia delle Iingue indeuropee by Vladimir I. Georgiev, 1966. Reviewed by James W. Poultney
 | last = Poultney | first = James W.
 | journal = Language
 | year = 1968 | volume = 44 | pages = 334–342
 | doi = 10.2307/411629 | jstor = 411629
}}
*{{Cite book| title = An Encyclopedia of the Languages of Europe
 | editor-last = Price | editor-first = Glanville
 | year = 1998
 | publisher = Wiley–Blackwell
 | isbn = 978-063119286-2
}}
*{{cite journal | title = Illyrian, Thracian, Daco-Mysian, the substratum of Romanian and Albanian
 | last = Rădulescu | first = Mircea-Mihai
 | journal = Journal of Indo-European Studies
 | year = 1984
 | issn = 0092-2323
}}
*{{cite journal | title = The Indo-European position of Illyrian, Daco-Mysian and Thracian: A historica-methodological approach
 | last = Rădulescu | first = Mircea-Mihai
 | journal = Journal of Indo-European Studies
 | year = 1987
 | issn = 0092-2323
}}
*{{Cite book| title = Archaeology and Language: The Puzzle of Indo-European Origins | edition = First
 | last = Renfrew | first = A.C. | year = 1987
 | author-link = Colin Renfrew
 | publisher = Cambridge University Press
 | isbn = 978-052135432-5
}}
*{{cite book| title = Archaeology and Language: The Puzzle of Indo-European Origins | edition = reprint
 | last = Renfrew | first = Colin | year = 1990
 | author-link = Colin Renfrew
 | publisher = Cambridge University Press
 | isbn = 978-052138675-3
}}
*{{cite book
 | title = Europos šaknys
 | trans-title = European Roots
 | editor-last = de Rosales
 | editor-first = Jurate
 | year = 2015
 | publisher = Versmė
 | language = lt
 | url = https://on.lt/europos-saknys
 | isbn = 978-609814816-9
 }}
*{{cite book| title = Las raíces de Europa
 | trans-title = European Roots
 | editor-last = de Rosales | editor-first = Jurate
 | year = 2020
 | publisher = Kálathos ediciones
 | language = es
 | isbn = 978-841218614-7
}}
*{{cite book| title = La linguistique Balkanique in Revue roumaine de linguistique
 | last = Rosetti | first = A. | year = 1982
 | author-link = Alexandru Rosetti
 | publisher = Editions de l'Academie de la RSR
 | volume = 27
 | language = fr
}}
*{{cite book| title = Istoria limbii române: De la origini pina in sec XVII
 | last = Rosetti | first = Alexandru | year = 1978
 | author-link = Alexandru Rosetti
 | publisher = Editura Stiintifica si Enciclopedica
 | language = ro
}}
*{{cite book| title = Istoria limbii române
 | last1 = Rosetti | first1 = Alexandru
 | last2 = Graur | first2 = Alexandru
 | author1-link = Alexandru Rosetti
 | author2-link = Alexandru Graur
 | year = 1969
 | publisher = Editura Academiei Romania
 | volume = 2
}}
*{{cite book| title = Limba traco-dacilor
 | last = Russu | first = I. I. | year = 1967
 | publisher = Editura Ştiinţifică | location = Bucharest
}}
*{{cite journal | title = Die Ortsnamen der Balkanhalbinsel in De Aedificiis
 | last = Russu | first = Ion Iosif
 | journal = Revue de Linguistique
 | year = 1963 | volume = VIII | pages = 123–132
}}
*{{cite book| title = Die Sprache der Thrako-Daker
 | last = Russu | first = Ion Iosif | year = 1969
 | language = de
}}
*{{Cite web
 | title = Noi nu suntem urmașii Romei
 | last = Săvescu
 | first = Napoleon
 | language = ro
 | url = http://www.dacia.org/carte
 | ref = {{harvid|''Noi nu suntem urmașii Romei''}}
 }}
*{{cite book
 | title = Ptolemy's maps of northern Europe: a reconstruction of the prototypes
 | last = Schütte
 | first = Gudmund
 | year = 1917
 | publisher = H. Hagerup
 | url = https://archive.org/details/ptolemysmapsofno00schrich
 | via = [[Internet Archive]]
 }}
*{{cite book| chapter = A Ptolemaic Riddle Solved
 | last = Schütte | first = Gudmund | year = 1952
 | title = [[Classica et Mediaevalia]] | edition = 1st
 | publisher = Gyldendal
 | volume = 13
}}
*{{cite web
 | title = Search: 'AE+1905%2C+00014'
 | work = Epigraphik-Datenbank Clauss / Slaby EDCS
 | url = http://oracle-vm.ku-eichstaett.de:8888/epigr/epieinzel_en?p_belegstelle=AE+1905%2C+00014&r_sortierung=Belegstelle
 | url-status = dead
 | archive-url = https://web.archive.org/web/20120429223709/http://oracle-vm.ku-eichstaett.de:8888/epigr/epieinzel_en?p_belegstelle=AE+1905,+00014&r_sortierung=Belegstelle
 | access-date = 26 April 2012
 | archive-date = 29 April 2012
 | ref = {{harvid|Epigraphik-Datenbank Clauss / Slaby EDCS}}
 }}
*{{cite book
 | title = Encyclopaedia of humanities and social sciences
 | last = Shashi
 | first = Shyam Singh
 | year = 1992
 | publisher = Anmol Publications
 | volume = 25
 | url = https://books.google.com/books?id=2DUoAAAAMAAJ&pg=PP1
 }}
*{{Cite book| title = Rome and the Barbarians in Central and Eastern Europe: 1st Century B.C. – 1st Century A.D
 | last = Shchukin | first = Mark B. | year = 1989
 | publisher = BAR Publishing | location = Oxford
 | series = B.A.R. International Series
 | isbn = 978-086054690-0
}}
*{{Cite book| title = The Origins of the Europeans: Classical Observations in Culture and Personality
 | last = Shelley | first = William Scott | year = 1997
 | publisher = International Scholars Publications
 | isbn = 978-157309221-0
}}
*{{Cite book
 | title = The geography of Strabo
 | last = Strabo
 | author-link = Strabo
 | translator1-last = Jones
 | translator1-first = Horace Leonard
 | translator2-last = Sterrett
 | translator2-first = John Robert Sitlington
 | orig-year = c. AD 20
 | editor-last = Jones
 | editor-first = Horace Leonard
 | publisher = William Heinemann and Harvard University Press
 | volume = 1
 | series = Loeb Classical Library 49, 50, 182, 196, 211, 223, 241, 267
 | url = https://archive.org/details/geographyofstrab01strauoft/page/n9/mode/2up
 | via = [[Internet Archive]]
 | date = 1917–1961
 | ref = {{harvid|Strabo|Jones|Sterrett|1917–1961}}
 }}
*{{cite web
 | title = Strabo Geography, Book VII, Chapter 3
 | url = https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Strabo/7C*.html
 | access-date = 29 January 2011
 | ref = {{harvid|Strabo Geography}}
 }}
*{{cite journal | title = The Thracian Bessi domo et militiae
 | last = Tacheva | first = Margarita
 | journal = Živa Antika – Antiquité Vivante
 | publisher = Živa antika | location = Skopje
 | year = 1997
 | issn = 0514-7727
}}
*{{cite book| title = [[Barrington Atlas of the Greek and Roman World]]
 | editor-last = Talbert | editor-first = Richard J.A. | editor-link = Richard Talbert
 | year = 2000
 | publisher = Princeton University Press
 | isbn = 978-069103169-9
 | ref = {{sfnref|Barrington Atlas|2000}}
}}
*{{cite encyclopedia| title = Northeastern European Iron Age, Dacian
 | edition = 1st
 | last = Taylor | first = Timothy | year = 2001
 | author-link = Timothy Taylor (archaeologist)
 | encyclopedia = Encyclopedia of prehistory
 | publisher = Springer
 | isbn = 978-030646258-0
}}
*{{Cite book| title = North-Western Thrace from the Fifth to First Centuries BC
 | last = Theodossiev | first = Nikola | year = 2000
 | publisher = BAR Publishing
 | series = British Archaeological Reports International Series
 | isbn = 978-184171060-0
}}
*{{cite journal | title = Repertoriu orientativ al descoperirilor dacice de pe teritoriul Ungariei
 | trans-title = A Catalogue of the Dacian Period Discoveries Found in the Territory of Hungary
 | last = Toma | first = Corina
 | journal = Crisia
 | publisher = Muzeul Ţării Crişurilor
 | year = 2007 | pages = 65–77
 | language = ro, en
 | issn = 1016-2798
}}
*{{cite journal | title = Les Restes de la langue dace
 | last = Tomaschek | first = Wilhelm
 | journal = Le Muséon
 | publisher = Société des lettres et des sciences | location = Louvain, Belgium
 | year = 1883 | volume = 2
 | language = fr
}}
*{{Cite book| script-title = ru:К фракийско-балтийским языковым параллелям.
 | trans-title = Towards Thracian-Baltic language parallels
 | last = Toporov | first = Vladimir Nikolayevich | year = 1973
 | author-link = Vladimir Toporov
 | publisher = Balkan linguistics [Балканское языкознание]
 | language = ru
 | pages = 51–52
}}
*{{cite book| title = Dictionary of Historical and Comparative Linguistics
 | last = Trask | first = Robert Lawrence | year = 2000
 | author-link = Larry Trask
 | publisher = Edinburgh University Press
 | isbn = 978-0-7486-1001-3
}}
*{{cite book| title = Die Balten des vorgeschichtlichen Mitteleuropas
 | last = Turnvvald | first = K. | year = 1968
 | place = Riga
 | language = de
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*{{cite book| title = Philip's Atlas of the Celts
 | last = Twist | first = Clint | year = 2001
 | editor-last = Raftery | editor-first = Barry | editor-link = Barry Raftery
 | publisher = George Philip | place = London
 | isbn = 978-0-5400-7880-6
}}
*{{cite book| title = Origins of Central Europe
 | last = Urbańczyk | first = Przemyslaw | year = 1997
 | author-link = Przemysław Urbańczyk
 | publisher = Warsaw
 | isbn = 83-85463-56-9
}}
*{{Cite book| title = Europe Around the Year 1000
 | editor-last = Urbańczyk | editor-first = Przemysław
 | year = 2001
 | series = Institute of Archeology and Ethnology; Polish Academy of Sciences
 | isbn = 978-837181211-8
}}
*{{cite book| title = The early medieval Balkans: a critical survey from the sixth to the late twelfth century
 | last = Van Antwerp Fine | first = John | year = 2000
 | publisher = Univ. of Michigan Press | location = Ann Arbor
 | isbn = 978-0-472-08149-3
}}
*{{Cite book| chapter = Luftbildarchäologie am römischen Limes in Ungarn
 | last = Visy | first = Z. | year = 1995
 | title = Luftbildarchäologie in Ost- und Mitteleuropa. Forschungen zur Archäologie im Land Brandenburg
 | editor-last = Kunow | editor-first = J.
 | publisher = Brandenburgisches Landesamt für Denkmalpflege
 | language = de
 | pages = 213–218
 | isbn = 978-391001108-3
}}
*{{cite web
 | title = Relationships Between Lithuanian And Balkan Schwebungs-Diaphonie: Interdisciplinary Search Key
 | last = Vyčinienė
 | first = Daiva
 | url = https://www.academia.edu/9177602
 | page = 122
 }}
*{{cite book| title = Introducere în studiul limbii şi culturii indo-europene
 | last1 = Wald | first1 = Lucia
 | last2 = Sluşanschi | first2 = Dan
 | last3 = Băltăceanu | first3 = Francisca
 | year = 1987
 | publisher = Editura Științifică și Enciclopedică
 | language = ro
}}
*{{cite book| title = Encyclopedia of European Peoples
 | last1 = Waldman | first1 = Carl
 | last2 = Mason | first2 = Catherine
 | year = 2006
 | publisher = Facts on File
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}}
*{{Cite book| title = The other Europe: Eastern Europe to 1945
 | last = Walters | first = E. Garrison | year = 1988
 | publisher = Syracuse University Press | location = Syracuse, NY
 | isbn = 978-0-8156-2440-0
}}
*{{cite journal | title = Proto-Albanian and the problem of the Albanian nation
 | last = Witczak | first = Krzysztof Tomasz
 | journal = Bulletin de la Société polonaise de linguistique
 | year = 1994 | volume = 50–52
}}
{{refend}}

==Further reading==
===Ancient===
{{refbegin}}
* [[Ammianus Marcellinus]] ''Res Gestae'' (c. 395)
* [[Jordanes]] ''[[Getica]]'' (c. 550)
* [[Sextus Aurelius Victor]] ''De Caesaribus'' (361)
* [[Zosimus (historian)|Zosimus]] ''Historia Nova'' (c. 500)
{{refend}}

===Modern===
{{refbegin|30em}}
*{{cite book| title = Thrace
 | last = Abramea | first = Anna P | year = 1994
 | publisher = Idea Advertising-Marketing
 | isbn = 978-960-85609-1-8
 | ref = none
}}
* CIL: ''[[Corpus Inscriptionum Latinarum]]''
*{{cite book| title = Die thrakischen Sprachreste
 | last = Dimiter | first = Detschew | year = 1957
 | location = Wien
 | language = de
 | ref = none
}}
* Georgiev, Vladimir I.. "Thrakische und dakische Namenkunde". Band 29/2. Teilband Sprache und Literatur (Sprachen und Schriften [Forts.]). Edited by Wolfgang Haase, Berlin, Boston: De Gruyter, 1983. pp.&nbsp;1220-1214. {{doi|10.1515/9783110847031-016}}
*{{cite book| title = Ancient Indo-European Dialects: The position of Albanian
 | last = Hamp | first = Eric P. | year = 1966
 | author-link = Eric P. Hamp
 | publisher = University of California Press and Cambridge University Press
 | url = https://books.google.com/books?id=5pCBRsfJMv8C
 | ref = none
}}
*{{cite book| title = Archaeology in Romania: the mystery of the Roman occupation
 | last = MacKenzie | first = Andrew | year = 1986
 | publisher = Hale | location = London
 | url = https://archive.org/details/archaeologyinrom0000mack | via = [[Internet Archive]]
 | isbn = 978-070902724-9
 | ref = none
}}
*{{cite book| title = World of the Huns studies in their history and culture
 | last = Maenchen-Helfen | first = Otto | year = 1973
 | publisher = University of California Press
 | url = https://archive.org/details/bub_gb_CrUdgzSICxcC | via = [[Internet Archive]]
 | isbn = 978-0-520-01596-8
 | ref = none
}}
*{{cite journal | title = 'Thrakisch-dakische Studien, I: Die thrakisch- und dakisch-baltischen Sprachbeziehungen by Ivan Duridanov' reviewed by Gordon M. Messing Cornell University Edited by George Melville Bolling
 | last = Messing | first = Gordon M.
 | journal = Language
 | year = 1972 | volume = 48 | issue = 4 | pages = 960–963
 | doi = 10.2307/412001 | jstor = 412001
 | ref = none
}}
*{{cite journal | title = The Przeworsk culture in the Upper Tisza Basin. An outline of problems
 | last = Oledzki | first = Marek
 | author-link = Marek Olędzki
 | journal = Ethnographisch-archäologische Zeitschrift
 | year = 2001 | volume = 42
 | ref = none
}}
*{{cite journal | title = Kaga şi Kōgaionon. Datele problemei
 | last = Olteanu | first = Sorin
 | journal = Thraco-Dacica
 | year = 1989 | volume = X | pages = 215–217
 | language = ro
 | ref = none
}}
*{{cite journal | title = Toponime procopiene
 | last = Olteanu | first = Sorin
 | journal = SCIVA
 | year = 2007 | volume = 58 | issue = 1–2 | pages = 67–116
 | language = ro
 | ref = none
}}
*{{cite book| title = Dacia
 | last = Parvan | first = Vasile | year = 1928
 | publisher = Cambridge University Press
 | ref = none
}}
*{{cite book| title = Celts and the Classical World, 2nd Edition
 | last1 = Rankin | first1 = David
 | last2 = Rankin | first2 = H. D.
 | year = 1996
 | publisher = Routledge
 | isbn = 978-0-415-15090-3
 | ref = none
}}
*{{cite book|title=The Indo-European Languages|last=Rusakov|first=Alexander|publisher=Routledge|year=2017 |isbn=9781317391531|editor1-last=Kapović|editor1-first=Mate|pages=552–602|chapter=Albanian|editor2-last=Giacalone Ramat |editor2-first=Anna|editor3-last=Ramat|editor3-first=Paolo|chapter-url=https://books.google.com/books?id=8i0lDwAAQBAJ}}
*{{cite journal | title = Kaga şi Kōgaionon. Analiză filologică şi lingvistică
 | last = Sluşanschi | first = Dan
 | journal = Thraco-Dacica
 | year = 1989 | volume = X | pages = 219–224
 | ref = none
}}
*{{cite book| title = Berücksichtigung des Substrats und des Balkanlateinischen
 | last = Solta | first = Georg Renatus | year = 1980
 | author-link = Georg Renatus Solta
 | publisher = Wissenschaftliche Buchgesellschaft
 | ref = none
}}
*{{Cite book| chapter = The Languages in Use, Ethnic And Social Structures
 | last = Tomas | first = Agnieszka | year = 2016
 | title = Inter Moesos Et Thraces: The Rural Hinterland of Novae in Lower Moesia (1st – 6th Centuries AD)
 | publisher = Archaeopress | location = Oxford
 | series = Archaeopress Roman Archaeology
 | pages = 119–124
 | doi = 10.2307/j.ctvxrq0qq.9 | isbn = 978-178491370-0
 | ref = none
}}
* {{cite book |last=Vraciu |first=Ariton |chapter=Reflections on linguistic and cultural relations between Anatolia and Dacia in the Bronze Age |editor-last=Crossland |editor-first=R. A. |title=Bronze Age Migrations in the Aegean: Archaeological and Linguistic Problems in Greek Prehistory |year=1974 |pages=281–291}}
*{{cite book| chapter = Sur la methodologie des recherches dans le domain des rapports linguistiques du thraco-dace et des autres langues indo-europeennes
 | last = Vraciu | first = Ariton | year = 1976
 | title = Thraco-Dacica
 | publisher = Institutul de Tracologie (Romania), Editura Academiei
 | ref = none
}}
*{{cite book| title = Vergleichendes Wörterbuch der indogermanischen Sprachen
 | trans-title = Comparative dictionary of Indo-German languages
 | last = Walde | first = Alois | year = 1973
 | orig-year = First published 1930
 | editor-last = Pokorny | editor-first = Julius
 | publisher = Walter de Gruyter
 | language = de
 | isbn = 978-3-11-004556-7
 | ref = none
}}
* <!-- commented out, pending further investigation (November 2021).
* https://www.webcitation.org/5vSjj8iYr?url=http://soltdm.com/geo/arts/categs/categs.htm
* https://web.archive.org/web/20100828102949/http://www.mnir.ro/publicat/damian/onomastica.html
* https://web.archive.org/web/20100828120452/http://www.mnir.ro/publicat/damian/topo.html
-->
{{refend}}

==External links==
{{Wiktionary category|type=Dacian language|category=Dacian language}}
{{Commons category|Dacian language}}
{{Commons|Dacia and Dacians}}
* [http://web.fu-berlin.de/phin/phin43/p43t2.htm Evidence for an Italic substratum of Romanian, by Keith Andrew Massey]

{{Dacia topics}}
{{Paleo-Balkan languages}}

{{DEFAULTSORT:Dacian Language}}
[[Category:Dacian language| ]]
[[Category:Extinct languages of Europe]]
[[Category:Unclassified Indo-European languages]]