Thai language - Wikipedia
Thai language
Not to be confused with Tai languages.
Thai,[a] Central Thai[b] (historically Siamese;[c]Thai: ภาษาไทย), is a Tai language of the Kra–Dailanguage family spoken by Central Thai people and vast majority of Thai Chinese.[d] It is the national language of Thailand[3][4] and de factoofficial language.
ภาษาไทย, Pasa Thai
Cambodia: (Koh Kong District)
EthnicityCentral Thai, Thai Chinese
Native speakers
20–36 million (2000)[1]
44 million L2 speakers with Lanna, Isan, Southern Thai, Northern Khmer and Lao (2001)[1]
Chiang Saen
Thai script
Thai Braille
Official status
Official language in
Recognised minority
language in
 Cambodia (Koh Kong)
 Malaysia (Kedah, Perlis, Kelantan and Hulu Perak district)
Regulated byRoyal Society of Thailand
Language codes
ISO 639-1th
ISO 639-2tha
ISO 639-3tha
Play media
A native Thai speaker, recorded in Bangkok.
Thai is the most spoken of over 60 languages of Thailand by both number of native and overall speakers. Over half of its vocabulary is derived from or borrowed from Pali, Sanskrit, Mon[5] and Old Khmer. It is a tonal and analytic language, similar to Chinese and Vietnamese.
Thai has a complex orthography and system of relational markers. Spoken Thai, depending on standard sociolinguistic factors such as age, gender, class, spatial proximity, and the urban/rural divide, is partly mutually intelligible with Lao, Isan, and some fellow Southwestern Tai languages. These languages are written with slightly different scripts but are linguistically similar and effectively form a dialect continuum.[6]
As a dominant language in all aspects of society in Thailand, Thai initially saw gradual and later widespread adoption as a second language among the country's minority ethnic groups since the establishment of the Rattanakosin Kingdom in late 18th century. Ethnic minorities today are predominantly bilingual, speaking Thai alongside their native language or dialect.
Further information: Tai–Kadai languages, Tai languages, and Tai peoples
Standard Thai is classified as one of the Chiang Saen languages—others being Tai Lanna, Southern Thai and numerous smaller languages, which together with the Northwestern Tai and Lao-Phutai languages, form the Southwestern branch of Tai languages. The Tai languages are a branch of the Kra–Dai language family, which encompasses a large number of indigenous languages spoken in an arc from Hainan and Guangxi south through Laos and Northern Vietnam to the Cambodian border.
Standard Thai is the principal language of education and government and spoken throughout Thailand. The standard is based on the dialect of the central Thai people, and it is written in the Thai alphabet.
Hlai languages
Kam-Sui languages
Kra languages
Be language
 Tai languages 
Northern Tai languages
Central Tai languages
Southwestern Tai languages
Northwestern Tai languages
Chiang Saen languages
Northern Thai language
Thai language
Southern Thai language
Lao‑Phuthai languages
Tai Yo language
Phuthai language
Lao language
Lao language
Isan language
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According to Chinese source, during Ming Dynasty, Yingya Shenglan (1405–1433), Ma Huan reported on the language of the Hsien Lo somewhat resembles the local patois as pronounced in Kuang tung province[7]:107 Thai has undergone various historical sound changes. Some of the most significant changes occurred during the evolution from Old Thai to modern Thai. The Thai writing system has an eight-century history and many of these changes, especially in consonants and tones, are evidenced in the modern orthography.
Old Thai
Old Thai had a three-way tone distinction on "live syllables" (those not ending in a stop), with no possible distinction on "dead syllables" (those ending in a stop, i.e. either /p/, /t/, /k/ or the glottal stop which automatically closes syllables otherwise ending in a short vowel).
There was a two-way voiced vs. voiceless distinction among all fricative and sonorant consonants, and up to a four-way distinction among stops and affricates. The maximal four-way occurred in labials (/p pʰ b ʔb/) and dentals (/t tʰ d ʔd/); the three-way distinction among velars (/k kʰ ɡ/) and palatals (/tɕ tɕʰ dʑ/), with the glottalized member of each set apparently missing.
The major change between old and modern Thai was due to voicing distinction losses and the concomitant tone split. This may have happened between about 1300 and 1600 CE, possibly occurring at different times in different parts of the Thai-speaking area. All voiced–voiceless pairs of consonants lost the voicing distinction:
However, in the process of these mergers the former distinction of voice was transferred into a new set of tonal distinctions. In essence, every tone in Old Thai split into two new tones, with a lower-pitched tone corresponding to a syllable that formerly began with a voiced consonant, and a higher-pitched tone corresponding to a syllable that formerly began with a voiceless consonant (including glottalized stops). An additional complication is that formerly voiceless unaspirated stops/affricates (original /p t k tɕ ʔb ʔd/) also caused original tone 1 to lower, but had no such effect on original tones 2 or 3.
The above consonant mergers and tone splits account for the complex relationship between spelling and sound in modern Thai. Modern "low"-class consonants were voiced in Old Thai, and the terminology "low" reflects the lower tone variants that resulted. Modern "mid"-class consonants were voiceless unaspirated stops or affricates in Old Thai—precisely the class that triggered lowering in original tone 1 but not tones 2 or 3. Modern "high"-class consonants were the remaining voiceless consonants in Old Thai (voiceless fricatives, voiceless sonorants, voiceless aspirated stops). The three most common tone "marks" (the lack of any tone mark, as well as the two marks termed mai ek and mai tho) represent the three tones of Old Thai, and the complex relationship between tone mark and actual tone is due to the various tonal changes since then. Since the tone split, the tones have changed in actual representation to the point that the former relationship between lower and higher tonal variants has been completely obscured. Furthermore, the six tones that resulted after the three tones of Old Thai were split have since merged into five in standard Thai, with the lower variant of former tone 2 merging with the higher variant of former tone 3, becoming the modern "falling" tone.[f]
Early Old Thai
Further information: Proto-Tai
Early Old Thai also apparently had velar fricatives /x ɣ/ as distinct phonemes. These were represented by the now-obsolete letters ฃ kho khuat and ฅ kho khon, respectively. During the Old Thai period, these sounds merged into the corresponding stops /kʰ ɡ/, and as a result the use of these letters became unstable.
At some point in the history of Thai, a palatal nasal phoneme /ɲ/ also existed, inherited from Proto-Tai. A letter ญ yo ying also exists, which is used to represent a palatal nasal in words borrowed from Sanskrit and Pali, and is currently pronounced /j/ at the beginning of a syllable but /n/ at the end of a syllable. Most native Thai words that are reconstructed as beginning with /ɲ/ are also pronounced /j/ in modern Thai, but generally spelled with ย yo yak, which consistently represents /j/. This suggests that /ɲ/ > /j/ in native words occurred in the pre-literary period. It is unclear whether Sanskrit and Pali words beginning with /ɲ/ were borrowed directly with a /j/, or whether a /ɲ/ was re-introduced, followed by a second change /ɲ/ > /j/.
Proto-Tai also had a glottalized palatal sound, reconstructed as /ʔj/ in Li Fang-Kuei (1977[full citation needed]). Corresponding Thai words are generally spelled หย, which implies an Old Thai pronunciation of /hj/ (or /j̊/), but a few such words are spelled อย, which implies a pronunciation of /ʔj/ and suggests that the glottalization may have persisted through to the early literary period.
Vowel developments
The vowel system of modern Thai contains nine pure vowels and three centering diphthongs, each of which can occur short or long. According to Li (1977[full citation needed]), however, many Thai dialects have only one such short–long pair (/a aː/), and in general it is difficult or impossible to find minimal short–long pairs in Thai that involve vowels other than /a/ and where both members have frequent correspondences throughout the Tai languages. More specifically, he notes the following facts about Thai:
Furthermore, the vowel that corresponds to short Thai /a/ has a different and often higher quality in many of the Tai languages compared with the vowel corresponding to Thai /aː/.
This leads Li to posit the following:
  1. Proto-Tai had a system of nine pure vowels with no length distinction, and possessing approximately the same qualities as in modern Thai: high /i ɯ u/, mid /e ɤ o/, low /ɛ a ɔ/.
  2. All Proto-Tai vowels were lengthened in open syllables, and low vowels were also lengthened in closed syllables.
  3. Modern Thai largely preserved the original lengths and qualities, but lowered /ɤ/ to /a/, which became short /a/ in closed syllables and created a phonemic length distinction /a aː/. Eventually, length in all other vowels became phonemic as well and a new /ɤ/ (both short and long) was introduced, through a combination of borrowing and sound change. Li believes that the development of long /iː ɯː uː/ from diphthongs, and the lowering of /ɤ/ to /a/ to create a length distinction /a aː/, had occurred by the time of Proto-Southwestern-Tai, but the other missing modern Thai vowels had not yet developed.
Note that not all researchers agree with Li. Pittayaporn (2009[full citation needed]), for example, reconstructs a similar system for Proto-Southwestern-Tai, but believes that there was also a mid back unrounded vowel /ə/ (which he describes as /ɤ/), occurring only before final velar /k ŋ/. He also seems to believe that the Proto-Southwestern-Tai vowel length distinctions can be reconstructed back to similar distinctions in Proto-Tai.
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According to Ethnologue, Thai language is spoken by over 20 million people (2000). Moreover, most Thais in the northern and the northeastern (Isaan) parts of the country today are bilingual speakers of Central Thai and their respective regional dialects due to the fact that (Central) Thai is the language of television, education, news reporting, and all forms of media.[8] A recent research found that the speakers of the Northern Thai language (or Kham Mueang) have become so few, as most people in northern Thailand now invariably speak Standard Thai, so that they are now using mostly Central Thai words and seasoning their speech only with "kham mueang" accent.[9] Standard Thai is based on the register of the educated classes in Bangkok.[10][11] In addition to Central Thai, Thailand is home to other related Tai languages. Although some linguists classify these dialects as related but distinct languages, native speakers often identify them as regional variants or dialects of the "same" Thai language, or as "different kinds of Thai".[12]
Central Plains Thai
Capital Core Thai
Upper Central Thai (Sukhothai dialects)
Southwestern Thai (Tenasserim Thai)
Khorat Thai
Main article: Khorat Thai
This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between [ ], / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters.
Standard Thai distinguishes three voice-onset times among plosive and affricate consonants:
Where English makes a distinction between voiced /b/ and unvoiced aspirated /pʰ/, Thai distinguishes a third sound - the unvoiced, unaspirated /p/ that occurs in English only as an allophone of /pʰ/, for example after an /s/ as in the sound of the p in "spin". There is similarly an alveolar /d/, /t/, /tʰ/ triplet in Thai. In the velar series there is a /k/, /kʰ/ pair and in the postalveolar series a /t͡ɕ/, /t͡ɕʰ/ pair, but the language lacks the corresponding voiced sounds /ɡ/ and /dʑ/. (In loanwords from English, English /ɡ/ and /d͡ʒ/ are borrowed as the tenuis stops /k/ and /t͡ɕ/.)
In each cell below, the first line indicates International Phonetic Alphabet (IPA), the second indicates the Thai characters in initial position (several letters appearing in the same box have identical pronunciation). The letter ห, one of the two h letters, is also used to help write certain tones (described below).
* ฃ and ฅ are no longer used. Thus, modern Thai is said to have 42 consonant letters.
** Initial อ is silent and therefore considered as a glottal stop.

Although the overall 44 Thai consonant letters provide 21 sounds in case of initials, the case for finals is different. For finals, only eight sounds, as well as no sound, called mātrā (มาตรา) are used. To demonstrate, at the end of a syllable, บ (/b/) and ด (/d/) are devoiced, becoming pronounced as /p/ and /t/ respectively. Additionally, all plosive sounds are unreleased. Hence, final /p/, /t/, and /k/ sounds are pronounced as [p̚], [t̚], and [k̚] respectively.
Of the consonant letters, excluding the disused ฃ and ฅ, six (ฉ ผ ฝ ห อ ฮ) cannot be used as a final and the other 36 are grouped as following.
* The glottal plosive appears at the end when no final follows a short vowel
In Thai, each syllable in a word is considered separate from the others, so combinations of consonants from adjacent syllables are never recognised as a cluster. Thai has phonotactical constraints that define permissible syllable structure, consonant clusters, and vowel sequences. Original Thai vocabulary introduces only 11 combined consonantal patterns:
The number of clusters increases when a few more combinations are presented in loanwords such as /tʰr/ (ทร) in อินทรา (/intʰraː/, from Sanskrit indrā) or /fr/ (ฟร) in ฟรี (/friː/, from English free); however, it can be observed that Thai language supports only those in initial position, with either /r/, /l/, or /w/ as the second consonant sound and not more than two sounds at a time.
The vowel nuclei of the Thai language are given in the following table. The top entry in every cell is the symbol from the International Phonetic Alphabet, the second entry gives the spelling in the Thai alphabet, where a dash (–) indicates the position of the initial consonant after which the vowel is pronounced. A second dash indicates that a final consonant must follow.
Monophthongs of Thai. From Tingsabadh & Abramson (1993:25)
Diphthongs of Thai. From Tingsabadh & Abramson (1993:25)
-ะ, -ั-
The vowels each exist in long-short pairs: these are distinct phonemes forming unrelated words in Thai,[13] but usually transliterated the same: เขา (khao) means "he" or "she", while ขาว (khao) means "white".
The long-short pairs are as follows:
–า/aː/ฝาน/fǎːn/'to slice'–ะ/a/ฝัน/fǎn/'to dream'
–ี /iː/กรีด/krìːt/'to cut'–ิ /i/กริช/krìt/'kris'
–ู /uː/สูด/sùːt/'to inhale'–ุ /u/สุด/sùt/'rearmost'
เ–/eː/เอน/ʔēːn/'to recline'เ–ะ/e/เอ็น/ʔēn/'tendon, ligament'
แ–/ɛː/แพ้/pʰɛ́ː/'to be defeated'แ–ะ/ɛ/แพะ/pʰɛ́ʔ/'goat'
–ื- /ɯː/คลื่น/kʰlɯ̂ːn/'wave'–ึ /ɯ/ขึ้น/kʰɯ̂n/'to go up'
เ–อ/ɤː/เดิน/dɤ̄ːn/'to walk'เ–อะ/ɤ/เงิน/ŋɤ̄n/'silver'
โ–/oː/โค่น/kʰôːn/'to fell'โ–ะ/o/ข้น/kʰôn/'thick (soup)'
There are also opening and closing diphthongs in Thai, which Tingsabadh & Abramson (1993) analyze as underlyingly /Vj/ and /Vw/. For purposes of determining tone, those marked with an asterisk are sometimes classified as long:
Thai scriptIPAThai scriptIPA
–าย/aːj/ไ–*, ใ–*, ไ–ย, -ัย/aj/
Additionally, there are three triphthongs. For purposes of determining tone, those marked with an asterisk are sometimes classified as long:
Thai scriptIPA
The five phonemic tones of Standard Thai pronounced with the syllable '/naː/':
There are five phonemic tones: mid, low, falling, high, and rising, sometimes referred to in older reference works as rectus, gravis, circumflexus, altus, and demissus, respectively.[14] The table shows an example of both the phonemic tones and their phonetic realization, in the IPA.
Thai language tone chart
  1. Five-level tone value: Mid [33], Low [21], Falling [43], High [44], Rising [323]. Traditionally, the high tone was recorded as either [44] or [45]. This remains true for the older generation, but the high tone is changing to [334] among youngsters.[15][16]
  2. For the diachronic changes of tone value, please see Pittayaporn (2007).[17]
  3. The full complement of tones exists only in so-called "live syllables", those that end in a long vowel or a sonorant (/m/, /n/, /ŋ/, /j/, /w/).
  4. For "dead syllables", those that end in a plosive (/p/, /t/, /k/) or in a short vowel, only three tonal distinctions are possible: low, high, and falling. Because syllables analyzed as ending in a short vowel may have a final glottal stop (especially in slower speech), all "dead syllables" are phonetically checked, and have the reduced tonal inventory characteristic of checked syllables.
Unchecked syllables
lowเอกข่า/kʰàː/[kʰaː˨˩] or [kʰaː˩]galangal
highตรีค้า/kʰáː/[kʰaː˦˥] or [kʰaː˥]to trade
risingจัตวาขา/kʰǎː/[kʰaː˩˩˦] or [kʰaː˩˦]leg
Checked syllables
low (short vowel)เอกหมัก/màk/[mak̚˨˩]marinate
low (long vowel)เอกหมาก/màːk/[maːk̚˨˩]areca nut, areca palm, betel, fruit
highตรีมัก/mák/[mak̚˦˥]habitually, likely to
fallingโทมาก/mâːk/[maːk̚˥˩]a lot, abundance, many
In some English loanwords, closed syllables with long vowel ending in an obstruent sound, have high tone, and closed syllables with short vowel ending in an obstruent sound have falling tone.
highตรีมาร์ก/máːk/[maːk̚˦˥]Marc, Mark
1 May be /báːs.kêt.bɔ̄l/ in educated speech.
From the perspective of linguistic typology, Thai can be considered to be an analytic language. The word order is subject–verb–object​,​[18] although the subject is often omitted. Additionally, Thai is an isolating language lacking any form of inflectional morphology whatsoever.[19] Thai pronouns are selected according to the gender and relative status of speaker and audience.
Adjectives and adverbs
There is no morphological distinction between adverbs and adjectives. Many words can be used in either function. They follow the word they modify, which may be a noun, verb, or another adjective or adverb.
Comparatives take the form "A X กว่า B" (kwa, [kwàː]), A is more X than B. The superlative is expressed as "A X ที่สุด" (thi sut, [tʰîːsùt]), A is most X.
Adjectives in Thai can be used as complete predicates. Because of this many words used to indicate tense in verbs (see Verbs:Tense below) may be used to describe adjectives.
Remark ฉันหิวแล้ว mostly means "I am hungry right now" because normally, แล้ว ([lɛ́ːw]) marks the change of a state, but แล้ว has many other uses as well. For example, in the sentence, แล้วเธอจะไปไหน ([lɛ́ːw tʰɤː tɕ͡àʔ paj nǎj]): So where are you going?, แล้ว ([lɛ́ːw]) is used as a discourse particle
Verbs do not inflect. They do not change with person, tense, voice, mood, or number; nor are there any participles. Being an analytic and case-less language, the relationship between subject, direct and indirect object is conveyed through word order and auxilliary verbs. Transitive verbs follow the pattern subject-verb-object.
In order to convey tense, aspect and mood (TAM), the Thai verbal system employs auxiliaries and verb serialization.[20][19] TAM markers are however not obligatory and often left out in colloquial use. In such cases, the precise meaning is determined through context.[20] This results in sentences lacking both TAM markers and overt context being ambiguous and subject to various interpretations.
The sentence "chan kin thi nan" can thus be interpreted as "I am eating there", "I eat there habitually", "I will eat there" or "I ate there". Aspect markers in Thai have been divided in to four distinct groups based on their usage.[20] These markers could appear either before or after the verb. The following list describes some of the most commonly used aspect markers. A number of these aspect markers are also full verbs on their own and carry a distinct meaning. For example yu as a full verb means "to stay, to live or to remain at". However as an auxilliary it can be described as a temporary aspect or continuative marker.[20]
The imperfective aspect marker กำลัง (kamlang, [kamlaŋ], currently) is used before the verb to denote an ongoing action (similar to the -ing suffix in English). Kamlang is commonly interpreted as a progressive aspect marker.[21][22] Similarly, อยู่ (yu, [jùː]) is a post-verbal aspect marker which corresponds to the continuative or temporary aspect.[20]
The marker ได้ (dai, [dâːj]) is usually analyzed as a past tense marker when it occurs before the verb.[19] As a full verb, dai means to 'get or receive'. However, when used after a verb, dai takes on a meaning of potentiality or successful outcome of the main verb[20].
เขาได้ไปเที่ยวเมืองลาว (khao cha dai pai thiao mueang lao, [kʰǎw t͡ɕaʔ dâj paj tʰîow mɯːəŋ laːw]), He visited Laos. (Past/Perfective)
เขาตีได้ (khao ti dai, [kʰǎw tiː dâːj]), He is/was allowed to hit or He is/was able to hit. (Potentiality)
แล้ว (laeo,  :[lɛ́ːw], already) is treated as a marker indicating the perfect aspect.[21] That is to say, laeo marks the event as being completed at the time of reference. Laeo has to other meanings in addition to its use as a TAM marker. Laeo can either be a conjunction for sequential actions or an archaic word for "to finish".
Future can be indicated by จะ (cha, [t͡ɕaʔ], "will") before the verb or by a time expression indicating the future. For example:
เขาจะวิ่ง (khao cha wing, [kʰǎw t͡ɕaʔ wîŋ]), He will run or He is going to run.
The passive voice is indicated by the insertion of ถูก (thuk, [tʰùːk]) before the verb. For example:
เขาถูกตี (khao thuk ti, [kʰǎw tʰùːk tiː]), He is hit. This describes an action that is out of the receiver's control and, thus, conveys suffering.
Negation is indicated by placing ไม่ (mai,[mâj] not) before the verb.
เขาไม่ตี, (khao mai ti) He is not hitting. or He doesn't hit.
Thai exhibits serial verb constructions, where verbs are strung together. Some word combinations are common and may be considered set phrases.
Nouns are uninflected and have no gender; there are no articles. Thai nouns are bare nouns and can be interpreted as singular, plural, definite or indefinite.[23] Some specific nouns are reduplicated to form collectives: เด็ก (dek, child) is often repeated as เด็ก ๆ (dek dek) to refer to a group of children. The word พวก (phuak, [pʰûak]) may be used as a prefix of a noun or pronoun as a collective to pluralize or emphasise the following word. (พวกผม, phuak phom, [pʰûak pʰǒm], we, masculine; พวกเรา phuak rao, [pʰûak raw], emphasised we; พวกหมา phuak ma, (the) dogs). Plurals are expressed by adding classifiers, used as measure words (ลักษณนาม), in the form of noun-number-classifier (ครูห้าคน khru ha khon, "teacher five person" for "five teachers"). While in English, such classifiers are usually absent ("four chairs") or optional ("two bottles of beer" or "two beers"), a classifier is almost always used in Thai (hence "chair four item" and "beer two bottle").
Possession in Thai is indicated by adding the word ของ (khong) in front of the noun or pronoun, but it may often be omitted. For example:
Nominal Phrases
Nominal phrases in Thai often use a special class of words classifiers. As previously mentioned, these classifiers are obligatory for noun phrases containing numerals e.g ผู้หญิงสองคน (phuying song khon, [pʰuːjiŋ sɔːŋ kʰon], two women).[25] In the previous example khon acts as the classifier in the nominal phrase. This follows the form of noun-cardinal-classifier mentioned above. Classifiers are also required to form quantified noun phrases in Thai with some quantifiers such as ทุก(all), บาง(some). The examples below are demonstrated using the classifier khon, which is used for people.
However, classifiers are not utilized for negative quantification. Negative quantification is expressed by the pattern ไม่มี (mai mi, [majmiː]) + NOUN. Classifiers are also used for demonstratives such as นี้ (ni, this/these) and นั่น (nan, that/those). The syntax for demonstrative phrases, however, differ from that of cardinals and follow the pattern noun-classifier-demonstrative​. For example, the noun phrase "this dog" would be expressed in Thai as หมาตัวนี้ (lit. dog (classifier) this).[25] Classifiers in Thai
Subject pronouns are often omitted, with nicknames used where English would use a pronoun. See Thai names#Formal and informal names for more details. Pronouns, when used, are ranked in honorific registers, and may also make a T–V distinction in relation to kinship and social status. Specialised pronouns are used for royalty, and for Buddhist monks. The following are appropriate for conversational use:
ผมphom[pʰǒm]I/me (masculine; formal)
ดิฉันdichan[dìʔt͡ɕʰán])I/me (feminine; formal)
ฉันchan[t͡ɕʰǎn]I/me (mainly used by women; informal) Commonly pronounced as [t͡ɕʰán]
กูku[kū]I/me (informal/impolite)
เราrao[raw]we/us, I/me (casual), you (sometimes used but only when older person speaks to younger person)
คุณkhun[kʰun]you (polite)
ท่านthan[tʰân]you (highly honorific)
เธอthoe[tʰɤː]you (informal), she/her (informal)
พี่phi[pʰîː]older brother, sister (also used for older acquaintances)
น้องnong[nɔːŋ]younger brother, sister (also used for younger acquaintances)
เขาkhao[kʰǎw]he/him, she/her
มันman[man]it, he/she (sometimes casual or offensive if used to refer to a person)
The reflexive pronoun is ตัวเอง (tua eng), which can mean any of: myself, yourself, ourselves, himself, herself, themselves. This can be mixed with another pronoun to create an intensive pronoun, such as ตัวผมเอง (tua phom eng, lit: I myself) or ตัวคุณเอง (tua khun eng, lit: you yourself). Thai also does not have a separate possessive pronoun. Instead, possession is indicated by the particle ของ (khong). For example, "my mother" is แม่ของผม (mae khong phom, lit: mother of I). This particle is often implicit, so the phrase is shortened to แม่ผม (mae phom). Plural pronouns can be easily constructed by adding the word พวก (phuak) in front of a singular pronoun as in พวกเขา (phuak khao) meaning they or พวกเธอ (phuak thoe) meaning the plural sense of you. The only exception to this is เรา (rao), which can be used as singular (informal) or plural, but can also be used in the form of พวกเรา (phuak rao), which is only plural.
Thai has many more pronouns than those listed above. Their usage is full of nuances. For example:
The particles are often untranslatable words added to the end of a sentence to indicate respect, a request, encouragement or other moods (similar to the use of intonation in English), as well as varying the level of formality. They are not used in elegant (written) Thai. The most common particles indicating respect are ครับ (khrap, [kʰráp], with a high tone) when the speaker is male, and ค่ะ (kha, [kʰâ], with a falling tone) when the speaker is female. Used in a question or a request, the particle ค่ะ (falling tone) is changed to a คะ (high tone).
Other common particles are:
จ๊ะcha/ja[t͡ɕáʔ]indicating a request
จ้ะ, จ้า or จ๋าcha/ja[t͡ɕâː]indicating emphasis
ละ or ล่ะla[láʔ]indicating emphasis
สิsi[sìʔ]indicating emphasis or an imperative
นะna[náʔ]softening; indicating a request
Central Thai is composed of several distinct registers, forms for different social contexts:
Most Thais can speak and understand all of these contexts. Street and Elegant Thai are the basis of all conversations.​[26]​[​citation needed] Rhetorical, religious, and royal Thai are taught in schools as part of the national curriculum.
As noted above, Thai has several registers, each having certain usages, such as colloquial, formal, literary, and poetic. Thus, the word "eat" can be กิน (kin; common), แดก (daek; vulgar), ยัด (yat; vulgar), บริโภค (boriphok; formal), รับประทาน (rapprathan; formal), ฉัน (chan; religious), or เสวย (sawoei; royal), as illustrated below:
"to eat"IPAUsageNote
ยัด/ját/vulgarOriginal meaning is 'to cram'
บริโภค/bɔ̄ː.ri.pʰôːk/formal, literary
รับประทาน/ráp.pra.tʰāːn/formal, politeOften shortened to ทาน /tʰāːn/.
Thailand also uses the distinctive Thai six-hour clock in addition to the 24-hour clock.
Main article: List of loanwords in Thai
Other than compound words and words of foreign origin, most words are monosyllabic.
Chinese-language influence was strong until the 13th century when the use of Chinese characters was abandoned, and replaced by Sanskrit and Pali scripts. However, the vocabulary of Thai retains many words borrowed from Middle Chinese.[27][28][29]
Later most vocabulary was borrowed from Sanskrit and Pāli; Buddhist terminology is particularly indebted to these. Indic words have a more formal register, and may be compared to Latin and French borrowings in English. Old Khmer has also contributed its share, especially in regard to royal court terminology. Since the beginning of the 20th century, however, the English language has had the greatest influence, especially for scientific, technical, international, and other modern terms.
Native Taiไฟ
Indic sources:
Pali or Sanskrit
Arabic wordsThai renditionIPAGloss
الْقُرْآن (al-qurʾān) or قُرْآن (qurʾān)อัลกุรอาน or โกหร่าน/an.kù.rá.aːn/ or /kō.ràːn/Quran
رجم (rajm)ระยำ/rá.jam/bad, vile (pejorative)
From Middle Chinese or Teochew Chinese.
Chinese wordsThai renditionIPAGloss
交椅 (teochew: gao1 in2)เก้าอี้/kâw.ʔîː/chair
粿條 / 粿条 (min nan: kóe-tiâu)ก๋วยเตี๋ยว/kǔəj.tǐəw/rice noodle
(hokkien: chiá/ché, teochew: zê2/zia2)เจ้ or เจ๊/t͡ɕêː/ or /t͡ɕéː/older sister (used in Chinese community in Thailand)
(hokkien: jī, teochew: ri6)ยี่/jîː/two (archaic), but still used in word ยี่สิบ (/jîː.sìp/; twenty)
(middle chinese: dəuH)ถั่ว/tʰùə/bean
(middle chinese: ʔɑŋX/ʔɑŋH)อ่าง/ʔàːŋ/basin
(middle chinese: kˠau)กาว/kāːw/glue
(middle chinese: kˠæŋX)ก้าง/kâːŋ/fishbone
(middle chinese: kʰʌmX)ขุม/kʰǔm/pit
(middle chinese: duo/ɖˠa)ทา/tʰāː/to smear
退 (middle chinese: tʰuʌiH)ถอย/tʰɔ̌j/to step back
English wordsThai renditionIPARemark
bankแบงก์/bɛ́ːŋ/means bank or banknote
billบิล/biw/ or /bin/
computerคอมพิวเตอร์/kʰɔ̄m.pʰíw.tɤ̂ː/colloquially shortened to คอม /kʰɔ̄m/
graphกราฟ/kráːp/ or /káːp/
plasticพลาสติก/pʰláːt.sà.tìk/(educated speech)
French wordsThai renditionIPARemark
pain(ขนม)ปัง/pāŋ/means bread
From Old Khmer.
Khmer wordsThai renditionIPAGloss
ក្រុង (grong)กรุง/krūŋ/capital city
ខ្ទើយ (ktəəy)กะเทย/kà.tɤ̄ːj/Kathoey
ច្រមុះ (chrâmuh)จมูก/t͡ɕà.mùːk/nose
ច្រើន (craən)เจริญ/t͡ɕà.rɤ̄ːn/prosperous
ឆ្លាត/ឆ្លាស (chlāt)ฉลาด/t͡ɕʰà.làːt/smart
ថ្នល់ (thenâl)ถนน/tʰà.nǒn/road
ភ្លើង (pləəŋ)เพลิง/pʰlɤ̄ːŋ/fire
ទន្លេ (tonle)ทะเล/tʰá.lēː/sea
The Portuguese were the first Western nation to arrive in what is modern-day Thailand in the 16th century during the Ayutthaya period. Their influence in trade, especially weaponry, allowed them to establish a community just outside the capital and practice their faith, as well as exposing and converting the locals to Christianity. Thus, Portuguese words involving trade and religion were introduced and used by the locals.
Portuguese wordsThai renditionIPAGloss
carta / cartazกระดาษ/krà.dàːt/paper
leilãoเลหลัง/lēː.lǎŋ/auction or low-priced
padreบาท(หลวง)/bàːt.lǔaŋ/(Christian) priest[30]
Writing system
Main articles: Thai script and Thai braille
"Kingdom of Thailand" in Thai script.
Thai is written in the Thai script, an abugida written from left to right. Many scholars believe[citation needed] that it is derived from the Khmer script. Certainly the numbers were lifted directly from Khmer. The language and its script are closely related to the Lao language and script. Most literate Lao are able to read and understand Thai, as more than half of the Thai vocabulary, grammar, intonation, vowels and so forth are common with the Lao language.
The Thais adopted and modified the Khmer script to create their own writing system. While in Thai the pronunciation can largely be inferred from the script, the orthography is complex, with silent letters to preserve original spellings and many letters representing the same sound. While the oldest known inscription in the Khmer language dates from 611 CE, inscriptions in Thai writing began to appear around 1292 CE. Notable features include:
  1. It is an abugida script, in which the implicit vowel is a short /a/ in a syllable without final consonant and a short /o/ in a syllable with final consonant.
  2. Tone markers, if present, are placed above the final onset consonant of the syllable.
  3. Vowels sounding after an initial consonant can be located before, after, above or below the consonant, or in a combination of these positions.
Main article: Romanization of Thai
There is no universally applied method for transcribing Thai into the Latin alphabet. For example, the name of the main airport is transcribed variously as Suvarnabhumi, Suwannaphum, or Suwunnapoom. Guide books, textbooks and dictionaries may each follow different systems. For this reason, most language courses recommend that learners master the Thai script.[citation needed]
Official standards are the Royal Thai General System of Transcription (RTGS), published by the Royal Institute of Thailand,[31] and the almost identical ISO 11940-2 defined by the International Organization for Standardization. The RTGS system is increasingly used in Thailand by central and local governments, especially for road signs.[32] Its main drawbacks are that it does not indicate tone or vowel length. As the system is based on pronunciation, not orthography, reconstruction of Thai spelling from RTGS romanisation is not possible.
Main article: Thai transliteration
The ISO published an international standard for the transliteration of Thai into Roman script in September 2003 (ISO 11940).[33] By adding diacritics to the Latin letters it makes the transcription reversible, making it a true transliteration. Notably, this system is used by Google Translate, although it does not seem to appear in many other contexts, such as textbooks and other instructional media.
See also
  1. ^ In Thai: ภาษาไทย Phasa Thai
  2. ^ Not to be confused with Central Tai
  3. ^ Although "Thai" and "Central Thai" has become more common, the older term "Siamese" is still used by linguists, especially to distinguish it from other Tai languages (Diller 2008:6[full citation needed]). "Proto-Thai", for example, is the ancestor of all of Southwestern Tai, not just of Siamese (Rischel 1998[full citation needed]).
  4. ^ Occasionally referred to as the "Central Thai people" in linguistics and anthropology to avoid confusion.
  5. ^ The glottalized stops /ʔb ʔd/ were unaffected, as they were treated in every respect like voiceless unaspirated stops due to the initial glottal stop. These stops are often described in the modern language as phonemically plain stops /b d/, but the glottalization is still commonly heard.
  6. ^ Modern Lao and northern Thai dialects are often described as having six tones, but these are not necessarily due to preservation of the original six tones resulting from the tone split. For example, in standard Lao, both the high and low variants of Old Thai tone 2 merged; however, the mid-class variant of tone 1 became pronounced differently from either the high-class or low-class variants, and all three eventually became phonemic due to further changes, e.g. /kr/ > /kʰ/. For similar reasons, Lao has developed more than two tonal distinctions in "dead" syllables.
  7. ^ These dialects are oftentimes stereotyped as Krung Thep dialects by outsiders.
  1. ^ a b Thai at Ethnologue (18th ed., 2015)
  2. ^ "Languages of ASEAN". Retrieved 7 August 2017.
  3. ^ Diller, A.; Reynolds, Craig J. (2002). "What makes central Thai a national language?". In Reynolds (ed.). National identity and its defenders : Thailand today. Chiang Mai: Silkworm Books. ISBN 974-7551-88-8. OCLC 54373362.
  4. ^ Draper, John (2019), "Language education policy in Thailand", The Routledge International Handbook of Language Education Policy in Asia, Abingdon, Oxon; New York, NY: Routledge, pp. 229–242, doi​:​10.4324/9781315666235-16​, ISBN 978-1-315-66623-5
  5. ^ Baker, Christopher (2014). A history of Thailand. Melbourne, Australia: Cambridge University Press. pp. 3–4. ISBN 9781316007334.
  6. ^ Enfield, N.J. "How to define 'Lao', 'Thai', and 'Isan' language? A view from linguistic science". Tai Culture. 3 (1): 62–67.
  7. ^ Ying-yai Sheng-lan: The Overall Survey of the Ocean's Shores (1433), Hakluyt Society at the University Press, 1970, ISBN 0521010322
  8. ^ Peansiri Vongvipanond (Summer 1994). "Linguistic Perspectives of Thai Culture". paper presented to a workshop of teachers of social science. University of New Orleans. p. 2. Archived from the original on 5 January 2013. Retrieved 26 April 2011. The dialect one hears on radio and television is the Bangkok dialect, considered the standard dialect.
  9. ^ Kemasingki, Pim; Prateepkoh, Pariyakorn (August 1, 2017). "Kham Mueang: the slow death of a language". Chiang Mai City Life: 8. there are still many people speaking kham mueang, but as an accent, not as a language. Because we now share the written language with Bangkok, we are beginning to use its vocabulary as well
  10. ^ Andrew Simpson (2007). Language and national identity in Asia. Oxford University Press. Standard Thai is a form of Central Thai based on the variety of Thai spoken earlier by the elite of the court, and now by the educated middle and upper classes of Bangkok. It ... was standardized in grammar books in the nineteenth century, and spread dramatically from the 1930s onwards, when public education became much more widespread
  11. ^ Thepboriruk, Kanjana (2010). "Bangkok Thai tones revisited". Journal of the Southeast Asian Linguistic Society. University of Hawaii Press. 3 (1): 86–105. Linguists generally consider Bangkok Thai and Standard Thai, the Kingdom’s national language, to be one and the same.
  12. ^ Antonio L. Rappa; Lionel Wee (2006), Language Policy and Modernity in Southeast Asia: Malaysia, the Philippines, Singapore, and Thailand, Springer, pp. 114–115
  13. ^ Tingsabadh & Abramson (1993:25)
  14. ^ Frankfurter, Oscar. Elements of Siamese grammar with appendices. American Presbyterian mission press, 1900 [1] (Full text available on Google Books)
  15. ^ Teeranon, Phanintra. (2007). "The change of Standard Thai high tone: An acoustic study and a perceptual experiment". SKASE Journal of Theoretical Linguistics, 4(3), 1-16.
  16. ^ Thepboriruk, Kanjana. (2010). "Bangkok Thai Tones Revisited". Journal of the Southeast Asian Linguistics Society, 3(1), 86-105.
  17. ^ Pittayaporn, Pittayawat. (2007). "Directionality of Tone Change". Proceedings of the 16th International Congress of Phonetic Sciences (ICPhS XVI).
  18. ^ Warotamasikkhadit, Udom (1972). Thai Syntax. The Hague: Mouton.
  19. ^ a b c Bisang, W. (1991), "Verb serialisation, grammaticalisation, and attractor positions in Chinese, Hmong, Vietnamese, Thai and Khmer", Partizipation: das sprachliche Erfassen von Sachverhalten, Tübingen: Narr, pp. 509–562, retrieved 2021-05-02
  20. ^ a b c d e f Jenny, Mathias; Ebert, Karen H.; Zúñiga, Fernando (2001), "The aspect system of Thai", Aktionsart and Aspectotemporality in non-European languages, Zurich: Seminar für Allgemeine Sprachwissenschaft, Universität Zürich, pp. 97–140, ISBN 978-3-9521010-8-7, retrieved 2021-05-02
  21. ^ a b Boonyapatipark, Tasanalai (1983). A study of aspect in Thai. University of London.
  22. ^ Koenig, Jean-Pierre; Muansuwan, Nuttanart (2005). "The Syntax of Aspect in Thai". Natural Language & Linguistic Theory. 23 (2): 335–380. ISSN 0167-806X.
  23. ^ Jenks, Peter (2011). "The Hidden Structure of Thai Noun Phrases" (PDF). Harvard University Ph.D. Thesis.
  24. ^ "". Retrieved 18 September 2010.
  25. ^ a b Smyth, David (2014). Thai (2nd ed.). Hoboken: Taylor and Francis. ISBN 978-1-317-97457-4. OCLC 879025983.
  26. ^ "The Languages spoken in Thailand". Studycountry. Retrieved 2017-12-26.
  27. ^ Martin Haspelmath, Uri Tadmor Loanwords in the World's Languages: A Comparative Handbook 2009 -- Page 611 "Thai is of special interest to lexical borrowing for various reasons. The copious borrowing of basic vocabulary from Middle Chinese and later from Khmer indicates that, given the right sociolinguistic context, such vocabulary is not at all immune ..."
  28. ^ Harald Haarmann Language in Ethnicity: A View of Basic Ecological Relations 1986- Page 165 "In Thailand, for instance, where the Chinese influence was strong until the Middle Ages, Chinese characters were abandoned in written Thai in the course of the thirteenth century."
  29. ^ Paul A. Leppert Doing Business With Thailand -1992 Page 13 "At an early time the Thais used Chinese characters. But, under the influence of Indian traders and monks, they soon dropped Chinese characters in favor of Sanskrit and Pali scripts."
  30. ^ สยาม-โปรตุเกสศึกษา: คำเรียก "ชา กาแฟ" ใครลอกใคร ไทย หรือ โปรตุเกส
  31. ^ Royal Thai General System of Transcription, published by the Thai Royal Institute only in Thai
  32. ^ Handbook and standard for traffic signs (PDF) (in Thai), Appendix ง
  33. ^ ISO Standard.
Further reading
External links
Thai edition of Wikipedia, the free encyclopedia
Wikiquote has quotations related to: Thai proverbs
Wikivoyage has a phrasebook for Thai.
This article's use of external links may not follow Wikipedia's policies or guidelines. Please improve this article by removing excessive or inappropriate external links, and converting useful links where appropriate into footnote references. (June 2015) (Learn how and when to remove this template message)
Glossaries and word lists
Learners' resources
Last edited on 24 June 2021, at 05:12
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