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Sub-apical retroflex plosive

In phonetics, retroflex consonants are consonant sounds used in some languages. (They are sometimes referred to as cerebral consonants, especially in Indology.) The tongue articulates with the roof of the oral cavity behind the alveolar ridge, and may even be curled back to touch the palate: that is, they are articulated in the postalveolar to palatal region of the mouth.

Retroflex consonants, like other coronals, come in several varieties, depending on the shape of the tongue. The tongue may be flat, with the blade of the tongue (the top surface of the tongue near the tip) approaching or touching the roof of the mouth, as in Polish cz, sz, ż (rz), dż and Mandarin zh, ch, sh, r. This is termed laminal (laminal retroflex). Or they may be pronounced with the tip of the tongue, as in Hindi. This is termed apical (apical retroflex). Finally, the tongue may be curled back so that the underside touches the alveolar or pre-palatal region, as in many of the Dravidian languages. This is termed sub-apical (sub-apical retroflex).

The consonants commonly called postalveolar, or more precisely palato-alveolar, such as English sh and ch, as well as the alveolo-palatals, such as Mandarin q, j, x, are also pronounced in the postalveolar region. However, they differ from retroflex consonants in having an additional secondary articulation of palatalization. The consonants commonly called palatal are pronounced in the palatal region like the sub-apical retroflexes, but they touch the palate with the back of the tongue, not the tip. (That is, they are dorsal, or more precisely dorso-palatal, rather than coronal consonants.)

In other words, retroflex consonants include various types of coronal consonants articulated behind the alveolar ridge which do not have the secondary articulation of palatalization.


Although data is not precise, about 20 percent of the world's languages contain retroflex consonants of one sort or another. About half of these possess only retroflex continuants, with most of the rest having both stops and continuants. Retroflex consonants are relatively rare among European languages, occurring in Sardinian, in Sicilian, some Italian dialects such as Calabrian, Salentino and Lunigianese, in Swedish and Norwegian (where a sequence of r plus a coronal consonant may be replaced by the coronal's retroflex equivalent, e.g. the name Martin would be pronounced . Also, this is sometimes done for several consonants in a row after an r - Hornstullmarker is pronounced ). The retroflex approximant is an allophone of the alveolar approximant in many dialects of American English, particularly in the Midwestern United Statesmarker. Polish and Russian possess retroflex sibilants, but no stops or liquids at this place of articulation. Retroflex consonants are largely absent from indigenous languages of the Americas with the exception of the extreme south of South America, an area in Southwestern US as in Hopi and Papago, and in Alaskamarker and the Yukon Territorymarker as in the Athabaskan languages Gwichʼin and Hän. In African languages retroflex consonants are also very rare, reportedly occurring in a few Nilo-Saharan languages. In southwest Ethiopia, phonemically distinctive retroflex consonants are found in Bench and Sheko, two contiguous, but not closely related, Omotic languages.

Retroflex consonants are concentrated in the Indo-Aryan languages and the Dravidian languages of the Indian subcontinent, where they occur as an areal feature apparently inherited from Dravidian (they do not exist in Proto-Indo-Iranian). Many retroflex consonants also exist in Eastern Iranian languages such as Pashto, Khotanese and Pamir languages. They are also common in Nuristani languages. They also occur in some other Asian languages such as Mandarin Chinese, Javanese and Vietnamese. The other major concentration is in the indigenous languages of Australia and the Western Pacific (notably New Caledoniamarker). Here, most languages have retroflex plosives, nasal and approximants.

There are several retroflex consonants not yet recognized by the IPA. For example, the Iwaidja language of northern Australia has a retroflex lateral flap as well as a retroflex tap and retroflex lateral approximant ; and the Dravidian language Toda has a sub-apical retroflex lateral fricative and a retroflexed trill . Because of the regularity of deriving retroflex symbols from their alveolar counterparts, people will occasionally use a font editor to create the appropriate symbols for such sounds. (Here they were written with diacritics.) The Ngad'a language of Floresmarker has been reported to have a retroflex implosive , but in this case the expected symbol is coincidentally supported by Unicode. Sub-apical retroflex clicks occur in Central Juu and in Damin.

Retroflex consonants identified by the International Phonetic Alphabet are:

IPA Description    Example
Language     Orthography   IPA                      Meaning      
retroflex nasal Swedish Vänern Vänernmarker
voiceless retroflex plosive Hindi टापू (āpū) island
voiced retroflex plosive Swedish nord north
voiceless retroflex fricative Mandarin 上海 (Shànghǎi) Shanghai
voiced retroflex fricative Russian
retroflex approximant Tamil தமிழ் (Tamil) Tamil
lateral retroflex approximant Swedish Karlstad Karlstadmarker
retroflex flap Hausa shaara sweeping
retroflex lateral flap Pashto ړوند blind
(voiced) retroflex click Central Juu water

Note: In the International Phonetic Alphabet, the symbols for retroflex consonants are typically the same as for the alveolar consonants, but with the addition of a right-facing hook to the bottom of the symbol. Some linguists restrict these symbols for the "true" retroflex consonants with sub-apical palatal articulation, and use the alveolar symbols with the obsolete IPA underdot symbol for an apical post-alveolar articulation: . Another solution, more in keeping with the official IPA, would be to use the rhotic diacritic for the apical retroflexes: . Laminal retroflexes, as in Polish and Russian, are often transcribed with a retraction diacritic, as , etc. Otherwise they are typically but inaccurately transcribed as if they were palato-alveolar, as * , etc.

See also


  1. Ian Maddieson (with a chapter contributed by Sandra Ferrari Disner); Patterns of sounds; Cambridge University Press, 1984. ISBN 0-521-26536-3
  2. Breeze, Mary. 1988. "Phonological features of Gimira and Dizi."‭ In Marianne Bechhaus-Gerst and Fritz Serzisko (eds.), Cushitic - Omotic: papers from the International Symposium on Cushitic and Omotic languages, Cologne, January 6-9, 1986, 473-487. Hamburg: Helmut Buske Verlag.

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