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Tamil phonology

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Tamil phonology

Tamil phonology is characterised by the presence of retroflex consonants and multiple rhotics. Tamil does not distinguish phonologically between voiced and unvoiced consonants; phonetically, voice is assigned depending on a consonant's position in a word.[1] Tamil phonology permits few consonant clusters, which can never be word initial. Native grammarians classify Tamil phonemes into vowels, consonants, and a "secondary character", the āytam.

The sentence literally means: "A poor old man slipped on a banana peel and fell sprawling."

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The vowels are called uyir ezhuthu (uyir - life, ezhuthu - letter). The vowels are classified into short and long (five of each type) and two diphthongs.

The long (nedil) vowels are about twice as long as the short (kuRil) vowels. The diphthongs are usually pronounced about one and a half times as long as the short vowels, though most grammatical texts place them with the long vowels.

Front Central Back
long short long short long short
Close i u
Mid e o
Open äː ɐ

Tamil has two diphthongs /(aːɪ)/ and /(aːʊ)/, the latter of which is restricted to a few lexical items.


The consonants are known as meyyezhuttu (mey-body, ezhuttu-letters). The consonants are classified into three categories with six in each category: vallinam - hard, mellinam - soft or nasal, and idayinam - medium. Tamil has very restricted consonant clusters (e.g. never word initial) and has neither aspirated nor voiced stops. Some scholars have suggested that in Chenthamil (which refers to Tamil as it existed before Sanskrit words were borrowed), stops were voiceless when at the start of a word and voiced allophonically otherwise.

A chart of the Tamil consonant phonemes in the International Phonetic Alphabet follows:

Tamil consonants[3]
Labial Dental Alveolar Retroflex Alveolo-palatal Velar Glottal
Nasal m n ɳ ȵ (ŋ)
Stop p (b) () t (d) ʈ (ɖ) k (ɡ)
Affricate t͡ɕ (d͡ʑ)
Fricative f2 s1 (z)2 ʂ2 ɕ1 h3
Tap ɽ
Approximant v ɻ j
Lateral approximant l ɭ
  1. These are allophones to 'c', and only exist in some dialects.
  2. These are peripheral to the phonology of Tamil, being found only in loanwords and frequently replaced by native sounds.
  3. This is allophonic to 'g', and is dialect-specific.

The voiceless consonants have multiple allophones, depending on position.

Tamil stop allophones
Place Initial Geminate Intervocalic Post-nasal
Velar k kk h~∅ ɡ
Palatal tʃ~s ttʃ s
Retroflex ʈʈ ɖ ɖ
Alveolar t̪t̪ r r
Dental ð
Labial p pp β~w b


Unlike most other Indian languages, Tamil does not have aspirated consonants. The Tamil script does not have distinct letters for voiced and unvoiced stop, although both are present in the spoken language as allophones—i.e., they are in complementary distribution and the places they can occur do not intersect. For example, the voiceless stop 'p' occurs at the beginning of the words and the voiced stop 'b' cannot. In the middle of words, voiceless stops commonly occur as a geminated pair like -pp-, while voiced stops usually do not. Only the voiced stops occur after a vowel, or after a corresponding nasal. Thus both the voiced and voiceless stops can be represented by the same script in Tamil without ambiguity, the script denoting only the place and broad manner of articulation (stop, nasal, etc.). The Tolkāppiyam cites detailed rules as to when a letter is to be pronounced with voice and when it is to be pronounced unvoiced. The rule is identical for all stops.

With the exception of one rule - the pronunciation of the letter c at the beginning of a word - these rules are largely followed even today in pronouncing centamil. The position is, however, much more complex in relation to spoken koduntamil. The pronunciation of southern dialects and the dialects of Sri Lanka continues to reflect these rules to a large extent, though not completely. In northern dialects, however, sound shifts have changed many words so substantially that these rules no longer describe how words are pronounced. In addition many, but not all, Sanskrit loan words are pronounced in Tamil as they were in Sanskrit, even if this means that consonants which should be unvoiced according to the Tolkāppiyam are voiced.

Phonologists are divided in their opinion over why written Tamil did not distinguish between voiced and unvoiced characters. One point of view is that Tamil never had conjunct consonants or voiced stops - voice was rather the result of elision or sandhi. Consequently, unlike Indo-European languages and other Dravidian languages, Tamil did not need separate characters for voiced consonants. A slightly different theory holds that voiced consonants were at one stage allophones of unvoiced consonants, and the lack of distinction between the two in the modern script merely reflects that.


Elision is the reduction in the duration of sound of a phoneme when preceded by or followed by certain other sounds. There are well-defined rules for elision in Tamil. They are categorised into different classes based on the phoneme which undergoes elision.

1. Kutriyalukaram the vowel u
2. Kutriyalikaram the vowel i
3. Aiykaarakkurukkam the diphthong ai
4. Oukaarakkurukkam the diphthong au
5. Aaythakkurukkam the special character akh (aaytham)
6. Makarakkurukkam the phoneme m


  1. ^ Schiffman, Harold F.; Arokianathan, S. (1986).   at p. 371
  2. ^ Keane (2004:114–115)
  3. ^ Keane (2004:111)


  • Keane, Elinor (2004). "Tamil". Journal of the International Phonetic Association 34 (1): 111–116.  
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