TheAiton language orTai Aiton language is spoken inAssam,India, in theDhonsiri Valley and the south bank of theBrahmaputra. It is currently classified as a threatened language, with fewer than 2,000 speakers worldwide. Its other names includeAitonia andSham Doaniya.^[3]

The Aiton language is a part of theSouthwestern branch of theTai family of languages. It is closely related to, and sometimes considered a dialect of,Shan. There are three other actively spoken languages of this branch in Assam:Khamti,Phake, andKhamyang.^[4]

The Tai languages in Assam share many grammatical similarities, a writing system, and much of their vocabulary.^[5] The most prominent differences between the languages are their tonal systems.^[4]

According to the oral and written records of the Aiton people, they originated from a place named Khao-KhaoMao-Lung, a Burmese state near the Chinese border.^[6] It is generally believed that they came to India about two or three hundred years ago, seeking refuge from oppression.^[6] Despite how long they have been in Assam, many members of the older generations are not fluent in Assamese, the official language of the state.^[7]

Aiton is spoken predominantly in India, in the northeastern state of Assam.

According to Morey (2005), Aiton is spoken in the following villages:

Buragohain (1998) reports a total of 260 Aiton households, comprising a total population of 2,155.

Morey reports the following initial consonants:^[8]

Aiton, like some other Tai languages, have a "minimal three-way contrast in voicing".^[7] It also only allows vowels to be voiced stops when they are in bilabial and dental/alveolar places of articulation. According to Morey, "[m] and[n] are variants for/b/ and/d/, respectively".^[7] Aiton, has voiced/r,l,w,j/ and four voiced nasals in its sound inventory.^[7] It does not have voiceless sonorants.^[7]

Aiton has the following final consonants:

-[w] occurs after front vowels and [a]-, -[j] occurs after back vowels and [a]-.^[2]

Aiton today uses three tones, however it originally used five but two have merged with other tones. The first tone still used today is 'mid/high level', the second tone is 'high level then falling' and the third is 'mid falling'. Originally the fourth tone, 'mid rising', has merged with the first tone. The fifth tone, 'mid falling glottalised', has merged with the third tone.^[8][7]

Aiton has a vowel system of only seven vowels,/i,ɯ,u,ɛ,ɔ,a,aa/, which is the smallest out of all the Tai languages spoken in Assam.^[7] From these seven vowels, Aiton allows only nine possible sequences.^[7]

The following set of pronouns are the pronouns found in the Aiton language:^[9]

Note: the form /-an2/ is a post-clitic form that approaches a definite article in function and may be attached to pronouns and even verbs.^[9]

The most common classifiers are:^[9]

• kɔ¹ for persons
• tu¹/to¹ for animals
• ʔan for inanimate objects

The Tai Aiton have their own writing system called 'Lik-Tai', which they share with theKhamti people andTai Phake people.^[2] It closely resembles the NorthernShan script of Myanmar, which is a variant of theBurmese script, with some of the letters taking divergent shapes.^[10]

• Buragohain, Yehom. 1998. "Some notes on the Tai Phakes of Assam, in Shalardchai Ramitanondh Virada Somswasdi and Ranoo Wichasin." InTai, pp. 126–143. Chiang Mai, Thailand:Chiang Mai University.
• Morey, Stephen. 2005.The Tai languages of Assam: a grammar and texts. Canberra: Pacific Linguistics.

• PARADISEC open access archive ofAiton language recordings

• Languages of Assam
• Southwestern Tai languages

• Pages containing links to subscription-only content
• Language articles citing Ethnologue 18
• CS1 errors: missing periodical
• Articles with short description
• Short description is different from Wikidata
• Articles containing Aiton-language text
• Pages with plain IPA