Gaulish was a language that no longer exists today and was spoken by the Celts in parts of Europe before and during the time of the Roman Empire. In a specific way, Gaulish was the language used by the Celts who lived in an area that is now France, Luxembourg, Belgium, most of Switzerland, northern Italy, and parts of the Netherlands and Germany near the Rhine River. In a broader sense, it also included other Celtic languages spoken in much of central Europe, parts of the Balkans, and Anatolia (called Galatian), which were likely closely related. A different Celtic language called Lepontic, spoken in northern Italy, was sometimes grouped with Gaulish as well.
Gaulish, along with Lepontic, Galatian, Celtiberian, and possibly Gallaecian (spoken in the Iberian Peninsula), belongs to a group of languages called Continental Celtic. The exact relationships between these languages and the modern Insular Celtic languages (like Irish or Welsh) are not fully understood and are still being studied because there are few written records and the history is complex.
Gaulish is found in about 800 inscriptions, many of which are only parts of longer texts. These include calendars, pottery labels, tomb markers, short messages to gods, coin writings, ownership statements, and possibly curse tablets. Gaulish was first written using Greek letters in southern France and Old Italic letters in northern Italy. After the Romans conquered these regions, people began writing in Latin letters. During his campaign in Gaul, Caesar noted that the Helvetii people had documents written in Greek letters, and Gaulish coins used Greek letters until about 50 BC.
By the middle of the first millennium AD, Gaulish was replaced in Western Europe by Vulgar Latin. It may have survived in some areas until the 6th century.
Some words in modern French and Gallo-Romance languages are believed to have come from Gaulish. These words, which number between 150 and 400, often describe farming and daily life activities. After the Norman Conquest in 1066, some of these words also entered the English language because of the influence of Old French.
Classification
During the Bronze Age, the Proto-Celtic language began to split into separate languages, such as Celtiberian and Gaulish. As Celtic tribes expanded across Europe between the 4th and 3rd centuries BC, related forms of Celtic spread widely, from Britain and France through the Alpine region and Pannonia in central Europe, and into parts of the Balkans and Anatolia. However, the exact relationships between these languages are unclear because of limited evidence.
The Gaulish language spoken in central and eastern Europe (called the hypothetical Noric language) and in Anatolia (known as the Galatian language) is poorly documented. From what is known, these languages seem similar to Gaulish and may be considered dialects of the same language. Noric is based on only two inscriptions found in Slovakia and Austria, making its existence uncertain compared to Galatian, which has more evidence. In areas with more written records, three main forms of Gaulish are typically identified.
Scholars debate how Gaulish relates to other Celtic languages. Many experts believe that Celtiberian was the first Celtic language to branch off from others. Gaulish, located in the center of the Celtic language area, shares a specific sound change with neighboring Brittonic languages in Britain and neighboring Italic Osco-Umbrian languages, where the Indo-European sound /kʷ/ changed to /p/. Celtiberian in the south and Goidelic in Ireland kept the original /kʷ/ sound. This change is used by some scholars to divide Celtic languages into two groups: "q-Celtic" (which includes Celtiberian and Goidelic) and "p-Celtic" (which includes Gaulish and Brittonic). These p-Celtic languages are sometimes grouped together as a "Gallo-Brittonic" branch. Other scholars focus on shared features between Brittonic and Goidelic, grouping them as an "Insular Celtic" branch. Sims-Williams (2007) suggests a model where Continental and Insular Celtic languages form a continuous range of dialects, with both family splits and regional changes overlapping.
History
Gaulish personal names written by the Gauls in Greek letters have been found near Massalia as early as the 3rd century BC. However, the first true inscriptions in Gaulish appeared in the 2nd century BC.
At least 13 mentions of Gaulish speech and writing are recorded in writings by Greek and Latin authors from ancient times. The term "Gaulish" (gallicum) is first clearly used in the Appendix Vergiliana, a collection of poems, to describe Gaulish letters of the alphabet. Julius Caesar wrote in his Commentarii de Bello Gallico (58 BC) that the Celts/Gauls and their language were separated from the Aquitani and Belgae by the rivers Garonne and Seine/Marne, respectively. He noted that census records written in Greek letters were found among the Helvetii. Caesar also stated that by 53 BC, Gaulish druids used the Greek alphabet for private and public matters, except for religious teachings, which were not written down. According to the Recueil des inscriptions gauloises, nearly three-quarters of Gaulish inscriptions (excluding coins) used the Greek alphabet. Later inscriptions from Roman Gaul were mostly in the Latin alphabet and were found mainly in central France.
Latin was quickly adopted by the Gaulish aristocracy after the Gallic Wars to maintain their power and influence. Trilingualism, the use of three languages, was noted in southern Gaul as early as the 1st century BC.
Early mentions of Gaulish in Gaul often discussed difficulties with Greek or Latin fluency until about AD 400. After around AD 450, Gaulish was mentioned in contexts where Latin had replaced "Gaulish" or "Celtic" (as authors used those terms), but initially, this change only affected the upper classes. For Galatia (in Anatolia), no sources explicitly mention a language shift in the 5th century.
Despite significant Roman influence on local culture, the Gaulish language is believed to have survived and been used alongside spoken Latin during the Roman rule of Gaul. The exact year when Gaulish stopped being spoken is unknown, but it is estimated to have been around the late sixth century AD.
The shift to Latin happened unevenly and was influenced by social factors. The presence of retired Roman soldiers in colonies did not greatly change the language of the population. Few Latin speakers settled in rural areas during Roman times, so Latin had little value for the rural population. As a result, about 90% of Gaul's population remained indigenous. The urban aristocracy, who used Latin for trade, education, and official matters, sent their children to Roman schools and managed lands for Rome. In the fifth century, when the Western Roman Empire collapsed, most of the population (mainly rural) still spoke Gaulish. They shifted to Latin as their main language about a century after the Frankish conquest of Gaul, adopting the prestigious language of the urban elite. This spread of Latin was linked to social changes, such as people moving from urban centers to village-based economies and systems of legal serfdom.
Bonnaud suggests that Latin replaced Gaulish earlier in Provence and major cities, while Gaulish lasted longer in some areas, possibly until the 10th century. Evidence of continued use is noted by Bonnaud in the ninth century in regions like Langres, between Clermont, Argenton, and Bordeaux, and in Armorica. Fleuriot, Falc'hun, and Gvozdanovic also mention a late survival of Gaulish in Armorica and some interaction with the rising Breton language. However, there is little clear evidence supporting a late survival of Gaulish specifically in Brittany. There is clear evidence, though, that Gaulish was spoken in the Swiss Alps and parts of Central Gaul. Based on this evidence, including the study of words that remained from Gaulish, Kerkhof suggests that Gaulish-speaking communities may have existed at least until the sixth century in mountainous areas of the Central Massif, the Jura, and the Swiss Alps.
Corpus
According to the Recueil des inscriptions gauloises, more than 760 Gaulish inscriptions have been found in France, except in Aquitaine and northern Italy. These inscriptions include short dedications, funerary monuments, statements about ownership, and expressions of human feelings. Some are longer documents related to law or religion. The three longest are the Larzac tablet, the Chamalières tablet, and the Lezoux dish. The most famous record is the Coligny calendar, a broken bronze tablet from the 2nd century AD. It lists the names of Celtic months over five years and uses a lunisolar calendar to match the solar year and lunar month by adding a 13th month every two and a half years. A tile from Châteaubleau with 11 lines has been interpreted as a curse or a wedding proposal.
Many inscriptions have only a few words, often names, and are broken. The records show that the Gaulish language was used by people from all parts of society.
Other sources, like Greek and Latin writings, mention Gaulish words, names, and place names. A short list of Gaulish-Latin words, called "Endlicher's Glossary," is in a 9th-century manuscript.
French now has about 150 to 180 known words from Gaulish, mostly related to farming or daily life. Including dialectal and related words, there are about 400 words. This is the highest number among Romance languages.
Gaulish inscriptions are in the Recueil des inscriptions gauloises (RIG), which includes texts in Latin, Greek, and Etruscan alphabets on public monuments, private documents, calendars, and coins.
The longest known Gaulish text is the Larzac tablet, found in 1983 in France. It is written in Roman cursive on lead sheets. It may be a curse tablet and mentions relationships between female names, like Aia, daughter of Adiega, and Adiega, mother of Aia. It also mentions incantations about a woman named Severa Tertionicna and a group of women, but the exact meaning is unclear.
The Coligny calendar was found in 1897 in France with a statue of Mars. It uses Gaulish words and Roman numerals. Words like "lat" likely mean "days," and "mid month" is mentioned. Months with 30 days are called "matus" (lucky), and months with 29 days are "anmatus" (unlucky), based on comparisons with Welsh words.
The pottery at La Graufesenque is a key source for Gaulish numbers. Potters used Latin cursive on ceramic plates to mark kiln loads numbered 1 to 10.
A lead inscription from Rezé, dated to the 2nd century, is an account or calculation with different ordinals.
Other Gaulish numbers in Latin inscriptions include "petrudecametos" (fourteenth) and "triconts" (thirty). A Latin phrase for a "ten-night festival of Apollo Grannus" is "decamnoctiacis Granni." The Coligny calendar mentions "trinox[…] Samoni" (three-night festival of Samonios). Gaulish was more similar to Latin than modern Celtic languages are to modern Romance languages. Latin ordinals are prīmus, secundus, tertius, quārtus, quīntus, sextus, septimus, octāvus, nōnus, and decimus.
An inscription from Alise-Sainte-Reine (1st century AD) reads:
Short inscriptions on spindle whorls, found recently, include messages like:
A gold ring from Thiaucourt seems to express loyalty to a lover:
Inscriptions in Switzerland are rare. The Bern zinc tablet, with the text "Dobnorēdo gobano brenodōr nantarōr," is dedicated to Gobannus, a Celtic god of metalwork. A statue of Artio, a goddess with a bear, in Muri bei Bern, has the Latin inscription "DEAE ARTIONI LIVINIA SABILLINA," suggesting the Gaulish name "Artiū" (Bear goddess).
Coins with Gaulish inscriptions in Greek letters, like RIG IV Nos. 92 (Lingones) and 267 (Leuci), were found in Switzerland. A sword from the La Tène period in Port, near Biel/Bienne, has the name "Korisios" inscribed on its blade, likely the smith’s name.
Phonology
Over time, diphthongs changed in pronunciation. The ai and oi diphthongs became long ī. The eu and ou diphthongs merged and became long ō. The ei diphthong became long ē. Generally, long diphthongs first became short diphthongs and later turned into long vowels. Long vowels shortened when they appeared before nasal sounds at the end of words.
Other changes included unstressed i turning into e, ln changing to ll, a stop sound followed by s becoming ss, and a nasal sound followed by a velar sound becoming ŋ plus a velar sound.
Lenis plosives were likely voiceless, unlike in Latin, where lenis occlusives had a voiced sound and fortis occlusives had a voiceless sound. This difference caused confusion in writing, such as Glanum instead of Clanum, vergobretos instead of vercobreto, and Britannia instead of Pritannia.
The Lugano alphabet was used in Cisalpine Gaul for writing Lepontic. This alphabet did not show differences in voicing for stop sounds: P could represent /b/ or /p/, T could represent /d/ or /t/, and K could represent /g/ or /k/. Z likely stood for /tˢ/. U and V were used to represent /u/ and /w/ in only one early inscription. Θ likely stood for /t/, and X for /g/ (Lejeune 1971, Solinas 1985).
The Eastern Greek alphabet was used in southern Gallia Narbonensis.
In Roman Gaul, the Latin alphabet (both monumental and cursive forms) included the following letters: G and K were sometimes used in place of each other, especially after R. Ꟈ / ꟈ, ds, and s might represent /ts/ and/or /dz/. X and x represented [x] or /ks/. Q was rarely used (as in Sequanni, Equos) and may have represented an old sound (*kʷ), borrowed words from Latin, or an alternate spelling of -cu- (for original /kuu/, /kou/, or /kom-u/). Ꟈ was the letter tau gallicum, representing the Gaulish affricate. The letters ꟉꟉ / ꟊꟊ appeared in some inscriptions.
Morphology
Gaulish had some regional and genetic similarities to Latin grammar, and the French historian Ferdinand Lot argued that this helped the quick spread of Vulgar Latin in Roman Gaul among city leaders.
Gaulish had seven grammatical cases: the nominative, vocative, accusative, genitive, dative, instrumental, and locative. More written evidence from inscriptions shows common cases (nominative and accusative) and common word endings (-o- and -a- stems) than less common cases or rarer endings like -i-, -n-, and -r- stems. The following table summarizes the reconstructed endings for words such as toṷtā "tribe, people," mapos "boy, son," ḷātis "seer," gutus "voice," and *brātīr "brother."
In some cases, changes over time are recorded. For example, the dative singular of a-stems was written as -āi in the oldest inscriptions, later becoming -ăi and finally -ī, similar to how Irish a-stem nouns with weaker consonant sounds are written today, such as nom. lámh "hand, arm" (compare Gaulish lāmā) and dat. láimh (< lāmi; compare Gaulish lāmāi > *lāmăi > lāmī). Additionally, the plural instrumental began to replace the dative plural in some inscriptions (dative atrebo and matrebo vs. instrumental gobedbi and suiorebe). In modern Insular Languages, the instrumental form is now used completely instead of the dative.
For o-stems, Gaulish introduced new endings for the nominative plural (-oi) and genitive singular (-ī) instead of the expected -ōs and -os still used in Celtiberian (-oś, -o). In a-stems, the original genitive singular ending -as was used but later changed to -ias, as seen in Insular Celtic. The expected genitive plural ending -a-om was changed to -anom (vs. Celtiberian -aum).
There also seems to be a dialectal connection between -n and -m endings in the accusative singular. Transalpine Gaulish often used -n, while Cisalpine Gaulish often used -m. In genitive plurals, the choice between -n and -m depends on the length of the vowel before it, with longer vowels using -m instead of -n (as seen in -anom, which evolved from -a-om).
Gaulish verbs had present, future, perfect, and imperfect tenses; indicative, subjunctive, optative, and imperative moods; and active and passive voices. Gaulish verbs also had several unique features. The Indo-European s-aorist became the Gaulish t-preterit, formed by combining an old third-person singular imperfect ending (-t) with a third-person singular perfect ending (-u or -e) and adding this to all forms of the t-preterit tense. Similarly, the s-preterit was created by extending -ss (originally from the third-person singular) and adding -it to the third-person singular to distinguish it. Third-person plurals in the preterit also had the ending -s added.
Syntax
Most Gaulish sentences follow a subject–verb–object word order. However, some sentences use different patterns, such as verb–subject–object, similar to living Insular Celtic languages, or place the verb at the end of the sentence. This verb-last structure may be a remnant from an older stage of the language, much like the earlier Celtiberian language.
Sentences beginning with the verb can signal specific purposes, such as giving commands, emphasizing ideas, or showing contrast. The verb may also be followed by an enclitic pronoun or words like "and" or "but." According to J. F. Eska, Gaulish was not a verb-second language, as shown by examples like:
When a pronoun object appears, it is placed next to the verb, following Vendryes' Restriction. General Celtic grammar also reflects Wackernagel's rule, which places the verb at the start of a clause or sentence. In Old Irish and traditional literary Welsh, the verb may be preceded by a particle that has no meaning on its own but helps make speech clearer.
Eska's model suggests that Vendryes' Restriction likely influenced the development of the verb-subject-object word order in Insular Celtic languages. However, scholars like John T. Koch disagree with this interpretation.
Since Gaulish is not a verb-final language, it is not surprising that other "head-initial" features appear:
Subordinate clauses come after the main clause and include an uninflected element (jo) to mark them as subordinate. This element is attached to the first verb in the subordinate clause. Jo is also used in relative clauses and to form equivalents of "that" clauses.
This element appears in Insular Celtic languages and is seen as an independent relative pronoun in Celtiberian.
Gaulish used object pronouns that were attached within words. Disjunctive pronouns (mi, tu, id) also appear as clitics, functioning similarly to emphasizing particles called notae augentes in Insular Celtic languages.
Clitic doubling, along with left dislocation, occurs when a noun referring to an inanimate object is treated grammatically as animate. A similar structure is found in Old Irish.
Modern usage
In an interview, the Swiss folk metal band Eluveitie shared that some of their songs are written in a version of an ancient language called Gaulish. The band works with experts in languages to help write songs in this language. The name "Eluveitie" comes from ancient graffiti found on a vessel from Mantua, Italy, dating to around 300 BC. The inscription, written in Etruscan letters, reads "eluveitie." This has been believed to be the Etruscan version of the Celtic word "helvetios," which likely refers to a person of Helvetian heritage living in Mantua at that time.