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Nasal labialized velar approximant

Nasal labialized velar approximant

The nasal labio-velar approximant is a type of consonantal sound used in some languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨⟩, that is, a w with a tilde. The equivalent X-SAMPA symbol is w~.

The nasal approximants [ȷ̃] and [w̃] may also be called nasal glides. In some languages like Portuguese, they form a second element of nasal diphthongs.


Features of the nasal labio-velar approximant:


Language Word IPA Meaning Notes
Kaingang[1] [w̃ĩ] 'to see' Possible word-initial realization of /w/ before a nasal vowel.[2]
Polish są [sɔũ̯] 'they are' See Polish phonology
Portuguese Most dialects[3][4] o [sɐ̃w̃] 'they are' Allophone of /w/ after nasal vowels. See Portuguese phonology
Some dialects[5] muamba [ˈmw̃ɐ̃bɐ] 'smuggling', 'jobbery',
Non-syllabic allophone of /u/ between nasal sounds.
Seri cmiique [ˈkw̃ĩːkːɛ] 'person' Allophone of /m/
Shipibo[6] ? [βɐ̃ˈw̃ɐ̃] 'parrot' Allophone of /w/ after nasal vowels.[6]
Uwa aya [ˈtaw̃aja] 'yellow'

See also



  • Bisol, Leda (2005), Introdução a estudos de fonologia do português brasileiro (in Portuguese), Porto Alegre - Rio Grande do Sul: EDIPUCRS, ISBN 85-7430-529-4
  • Cruz-Ferreira, Madalena (1995), "European Portuguese", Journal of the International Phonetic Association, 25 (2): 90–94, doi:10.1017/S0025100300005223
  • Jolkesky, Marcelo Pinho de Valhery (2009), "Fonologia e prosódia do Kaingáng falado em Cacique Doble", Anais do SETA, Campinas: Editora do IEL-UNICAMP, 3: 675–685
  • Valenzuela, Pilar M.; Márquez Pinedo, Luis; Maddieson, Ian (2001), "Shipibo", Journal of the International Phonetic Association, 31 (2): 281–285, doi:10.1017/S0025100301002109

External links