An abugida, sometimes known as alphasyllabary, neosyllabary or pseudo-alphabet, is a segmental writing system in which consonant–vowel sequences are written as units; each unit is based on a consonant letter, and vowel notation is secondary, like a diacritical mark. This contrasts with a full alphabet, in which vowels have status equal to consonants, and with an abjad, in which vowel marking is absent, partial, or optional – in less formal contexts, all three types of script may be termed "alphabets". The terms also contrast them with a syllabary, in which a single symbol denotes the combination of one consonant and one vowel.
Thai, or Central Thai, is a Tai language of the Kra–Dai language family spoken by the Central Thai people, Mon in Central Thailand and the vast majority of Thai Chinese enclaves throughout the country. It is the sole official language of Thailand.
The Brahmic scripts, also known as Indic scripts, are a family of abugida writing systems. They are used throughout the Indian subcontinent, Southeast Asia and parts of East Asia. 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.
The Thai script is the abugida used to write Thai, Southern Thai and many other languages spoken in Thailand. The Thai alphabet itself has 44 consonant symbols and 16 vowel symbols that combine into at least 32 vowel forms and four tone diacritics to create characters mostly representing syllables.
The Burmese alphabet is an abugida used for writing Burmese. It is ultimately adapted from a Brahmic script, either the Kadamba or Pallava alphabet of South India. The Burmese alphabet is also used for the liturgical languages of Pali and Sanskrit. In recent decades, other, related alphabets, such as Shan and modern Mon, have been restructured according to the standard of the Burmese alphabet
The Ahom script or Tai Ahom Script is an abugida that is used to write the Ahom language, a dormant Tai language undergoing revival spoken by the Ahom people till the late 18th-century, who established the Ahom kingdom and ruled the eastern part of the Brahmaputra valley between the 13th and the 18th centuries. The old Ahom language today survives in the numerous manuscripts written in this script currently in institutional and private possession.
Lao script or Akson Lao is the primary script used to write the Lao language and other minority languages in Laos. Its earlier form, the Tai Noi script, was also used to write the Isan language, but was replaced by the Thai script. It has 27 consonants, 7 consonantal ligatures, 33 vowels, and 4 tone marks.
The Shan language is the native language of the Shan people and is mostly spoken in Shan State, Myanmar. It is also spoken in pockets in other parts of Myanmar, in Northern Thailand, in Yunnan, in Laos, in Cambodia, in Vietnam and decreasingly in Assam and Meghalaya. Shan is a member of the Tai–Kadai language family and is related to Thai. It has five tones, which do not correspond exactly to Thai tones, plus a sixth tone used for emphasis. The term Shan is also used for related Northwestern Tai languages, and it is called Tai Yai or Tai Long in other Tai languages. Standard Shan, which is also known as Tachileik Shan, is based on the dialect of the city of Tachileik.
Tai Lue 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.
Tai Nuea or Tai Nüa, also called Dehong Tai and Chinese Shan, is one of the languages spoken by the Dai people in China, especially in the Dehong Dai and Jingpo Autonomous Prefecture in the southwest of Yunnan Province. It is closely related to the other Tai languages and could be considered a dialect of Shan. Speakers of this language across the border in Myanmar are known as Shan. It should not be confused with Tai Lü.
The Tai Le script, or Dehong Dai script, is a Brahmic script used to write the Tai Nüa language spoken by the Tai Nua people of south-central Yunnan, China. It is written in horizontal lines from left to right, with spaces only between clauses and sentences.
The Khamti language is a Southwestern Tai language spoken in Myanmar and India by the Khamti people. It is closely related to, and sometimes considered a dialect of, Shan.
New Tai Lue script, also known as Xishuangbanna Dai and Simplified Tai Lue, is an abugida used to write the Tai Lü language. Developed in China in the 1950s, New Tai Lue is based on the traditional Tai Tham alphabet developed c. 1200. The government of China promoted the alphabet for use as a replacement for the older script; teaching the script was not mandatory, however, and as a result many are illiterate in New Tai Lue. In addition, communities in Burma, Laos, Thailand and Vietnam still use the Tai Tham alphabet.
Tai Tham script is an abugida writing system used mainly for a group of Southwestern Tai languages i.e., Northern Thai, Tai Lü, Khün and Lao; as well as the liturgical languages of Buddhism i.e., Pali and Sanskrit. It is historically known as Tua Tham. In Thailand and Myanmar, the script is often referred to as Lanna script in relation to the historical kingdom of Lan Na situating in the Northern region of modern day Thailand and a part of Shan state in Myanmar. Local people in Northern Thailand also call the script as Tua Mueang in parallel to Kam Mueang, a local name for Northern Thai language. In Laos and Isan region of Thailand, a variation of Tai Tham script, often dubbed Lao Tham, is also known by the locals as To Tham Lao or Yuan script. Tai Tham script is traditionally written on a dried palm leaf as a palm-leaf manuscript.
In orthography, a zero consonant, silent initial, or null-onset letter is a consonant letter that does not correspond to a consonant sound, but is required when a word or syllable starts with a vowel. Some abjads, abugidas, and alphabets have zero consonants, generally because they have an orthographic rule that all syllables must begin with a consonant letter, whereas the language they transcribe allows syllables to start with a vowel. In a few cases, such as Pahawh Hmong below, the lack of a consonant letter represents a specific consonant sound, so the lack of a consonant sound requires a distinct letter to disambiguate.
The Mon–Burmese script is an abugida that derives from the Pallava Grantha script of southern India and later of Southeast Asia. It is the basis of the alphabets used for modern Burmese, Mon, Shan, Rakhine, Jingpho and Karen.
The Leke script, previously known as Karen Chicken Scratch script, is an abugida used to write the Pwo Karen language and Sgaw language in Burma (Myanmar) and Thailand. It has 25 consonants, 17 vowels and 3 tones. The script also has a unique set of numerals and punctuation, such as a full stop (period) and a comma.
The Mon alphabet is a Brahmic abugida used for writing the Mon language. It is an example of the Mon-Burmese script, which derives from the Pallava Grantha script of southern India.
The Tai Viet script is a Brahmic script used by the Tai Dam people and various other Thai people in Vietnam and Thailand.
