Tai languages in the context of Daic

The Brahmic scripts, also known as Indic scripts, are a family of abugida writing systems. They are descended from the Brahmi script of ancient India and are used by various languages in several language families in South, East and Southeast Asia: Indo-Aryan, Dravidian, Tibeto-Burman, Mongolic, Austroasiatic, Austronesian, and Tai. They were also the source of the dictionary order (gojūon) of Japanese kana.

Tai peoples are the populations who speak (or formerly spoke) the Tai languages. There are a total of about 93 million people of Tai ancestry worldwide, with the largest ethnic groups being Dai, Thai, Isan, Lao, Shan, Ahom, Zhuang, Tày, Nùng, Táy, and some Northern Thai peoples.

The Tai are scattered through much of South China and Mainland Southeast Asia, with some (e.g. Tai Ahom, Tai Khamti, Tai Phake, Tai Aiton) inhabiting parts of Northeast India. Tai peoples are both culturally and genetically very similar and therefore primarily identified through their language.

The Bouyei language (autonym: Haausqyaix, also spelled Buyi, Buyei or Puyi; Chinese: 布依语; pinyin: Bùyīyǔ; Vietnamese: tiếng Bố Y or tiếng Giáy) is a language spoken by the Bouyei ethnic group of Southern Guizhou Province, China. Classified as a member of the Northern Tai group in the Tai language branch of the Tai–Kadai language family, the language has over 2.5 million native speakers and is also used by the Giay people (Vietnamese: Giáy) in some parts of Vietnam. There are native speakers living in France and the United States as well, who emigrated from China or Vietnam. About 98% of the native speakers are in China.

Bouyei's characteristics are similar to the other members of its language branch. It is generally monosyllabic and word order and particles are the main forms of grammar. Bouyei's syllable initials match up closely to the other Northern Tai languages, with relatively fast simplification and merging. Bouyei sentences can be shown to contain many different levels of phrasing.

The Zhuang languages (/ˈdʒwæŋ, ˈdʒwɒŋ/; autonym: Vahcuengh, Zhuang pronunciation: [βa˧ɕuːŋ˧], pre-1982: Vaƅcueŋƅ, Sawndip: 話僮, from vah, 'language' and Cuengh, 'Zhuang'; simplified Chinese: 壮语; traditional Chinese: 壯語; pinyin: Zhuàngyǔ) are the more than a dozen Tai languages spoken by the Zhuang people of Southern China in the province of Guangxi and adjacent parts of Yunnan and Guangdong. The Zhuang languages do not form a monophyletic linguistic unit, as northern and southern Zhuang languages are more closely related to other Tai languages than to each other. Northern Zhuang languages form a dialect continuum with Northern Tai varieties across the provincial border in Guizhou, which are designated as Bouyei, whereas Southern Zhuang languages form another dialect continuum with Central Tai varieties such as Nung, Tay and Caolan in Vietnam. Standard Zhuang is based on the Northern Zhuang dialect of Wuming.

The Tai languages are believed to have been originally spoken in what is now southern China, with speakers of the Southwestern Tai languages (which include Thai, Lao and Shan) having emigrated in the face of Chinese expansion.Noting that both the Zhuang and Thai peoples have the same exonym for the Vietnamese, kɛɛu, from the Chinese commandery of Jiaozhi in northern Vietnam, Jerold A. Edmondson posited that the split between Zhuang and the Southwestern Tai languages happened no earlier than the founding of Jiaozhi in 112 BC. He also argues that the departure of the Thai from southern China must predate the 5th century AD, when the Tai who remained in China began to take family names.

The Kra–Dai languages (/ˈkrɑː.daɪ/ KRAH-dy, also known as Tai–Kadai /ˈtaɪ.kəˌdaɪ/ TIE-kə-DYE and Daic /ˈdaɪ.ɪk/ DYE-ik), are a language family in mainland Southeast Asia, southern China, and northeastern India. All languages in the family are tonal, including Thai and Lao, the national languages of Thailand and Laos, respectively. Around 93 million people speak Kra–Dai languages; 60% of those speak Thai. Ethnologue lists 95 languages in the family, with 62 of these being in the Tai branch.

The Zhuang (/ˈdʒwæŋ, ˈdʒwɒŋ/ ; Chinese: 壮族; pinyin: Zhuàngzú; Zhuang: Bouxcuengh, [poːu˦˨ ɕeŋ˧], Sawndip: 佈獞) are a Tai-speaking ethnic group who mostly live in the Guangxi Zhuang Autonomous Region in Southern China. Some also live in the Yunnan, Guangdong, Guizhou, and Hunan provinces. They form one of the 56 ethnic groups officially recognized by the People's Republic of China. With the Bouyei, Nùng, Tày, and other Northern Tai speakers, they are sometimes known as the Rau or Rao people. Their population, estimated at 19 million people, makes them the largest minority in China.

The Dai people (Burmese: ရှမ်းလူမျိုး; Tai Lü: ᨴᩱ/ᨴᩱ᩠ᨿ; Lao: ໄຕ; Thai: ไท; Shan: တႆး, [tai˥˩]; Tai Nüa: ᥖᥭᥰ, [tai˥]; Chinese: 傣族; pinyin: Dǎizú) are several Tai-speaking ethnic groups living in the Xishuangbanna Dai Autonomous Prefecture and the Dehong Dai and Jingpo Autonomous Prefecture of China's Yunnan Province. The Dai people form one of the 56 ethnic groups officially recognized by the People's Republic of China. By extension, the term can apply to groups in Laos, Vietnam, Thailand and Myanmar when Dai is used to mean specifically Tai Yai, Lue, Chinese Shan, Tai Dam, Tai Khao or even Tai in general. For other names, see the table below.

Lao (ພາສາລາວ, [pʰáː.sǎː láːw]), sometimes referred to as Laotian, is the official language of Laos and a significant language in the Isan region of northeastern Thailand, where it is usually referred to as the Isan language. Spoken by over 3 million people in Laos and 3.7 million in all countries, it serves as a vital link in the cultural and social fabric of these areas. It is written in the Lao script, an abugida that evolved from ancient Tai scripts.

Lao is a tonal language, where the pitch or tone of a word can alter its meaning, and is analytic, forming sentences through the combination of individual words without inflection. These features, common in Kra-Dai languages, also bear similarities to Sino-Tibetan languages like Chinese or Austroasiatic languages like Vietnamese. Lao's mutual intelligibility with Thai and Isan, fellow Southwestern Tai languages, allows for effective intercommunication among their speakers, despite differences in script and regional variations.

Nefamese or Arunamese is a pidgin of Arunachal Pradesh (formerly NEFA), India. Its classification is unclear; Ethnologue states that it is based on the Assamese language, but also that it is most closely related to the Sino-Tibetan Gallong like the Assamese language formed out by the mixture of languages like Austroasiatic, Tibeto-Burman, Tai and Indo-European family of languages.

Nefamese emerged in eastern Arunachal Pradesh as a lingua franca among the Nyishi, Adi, Apatanai, Khampti, Hill Miri, Idu Mishimi, Nocte, Wancho, Tagin, Mompa, Zakhring, and Bugun peoples, among others—between them and with other Indigenous Assamese people and other Indigenous groups of Northeast India. The language is threatened by, and has perhaps somewhat been replaced by, the use of Hindi.

The Zhuang languages (/ˈdʒwæŋ, ˈdʒwɒŋ/; autonym: Vahcuengh [βa˧ɕuːŋ˧], Sawndip: 話僮) are more than a dozen Tai languages spoken by the Zhuang people of Southern China in the province of Guangxi and adjacent parts of Yunnan and Guangdong. The Zhuang languages do not form a monophyletic linguistic unit, as northern and southern Zhuang languages are more closely related to other Tai languages than to each other. Northern Zhuang languages form a dialect continuum with Northern Tai varieties across the provincial border in Guizhou, which are designated as Bouyei, whereas Southern Zhuang languages form another dialect continuum with Central Tai varieties such as Nung, Tay and Caolan in Vietnam. Standard Zhuang is based on the Northern Zhuang dialect of Wuming.

The Tai languages are believed to have been originally spoken in what is now southern China, with speakers of the Southwestern Tai languages, which include Thai (modern-day Thailand), Lao (modern-day Laos) and Shan (modern-day Shan State, Myanmar) having emigrated south in the face of Chinese expansion. Noting that both the Zhuang and Thai peoples have the same exonym for the Vietnamese, kɛɛu, from the Chinese commandery of Jiaozhi in northern Vietnam, Jerold A. Edmondson posited that the split between Zhuang and the Southwestern Tai languages happened no earlier than the founding of Jiaozhi in 112 BC. He also argues that the departure of the Thai from southern China must predate the 5th century AD, when the Tai who remained in China began to take family names.

Tai Lue (New Tai Lü: ᦅᧄᦺᦑᦟᦹᧉ, Tai Tham: ᨣᩤᩴᨴᩱ᩠ᨿᩃᩨᩢ, kam tai lue, [kâm.tâj.lɯ̀]), or Xishuangbanna Dai, is a Tai language of the Lu people, spoken by about 700,000 people in Southeast Asia. This includes 280,000 people in China (Yunnan), 200,000 in Burma, 134,000 in Laos, 83,000 in Thailand and 4,960 in Vietnam. The language is similar to other Tai languages and is closely related to Kham Mueang or Tai Yuan, which is also known as Northern Thai language. In Yunnan, it is spoken in all of Xishuangbanna Dai Autonomous Prefecture, as well as Jiangcheng Hani and Yi Autonomous County in Pu'er City.

In Vietnam, Tai Lue speakers are officially recognised as the Lự ethnic minority, although in China they are classified as part of the Dai people, along with speakers of the other Tai languages apart from Zhuang.