Voiceless bilabial trill
ʙ̥
Encoding
X-SAMPAB\_0
Audio sample

The voiceless bilabial trill is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʙ̥⟩.

This sound is typologically extremely rare. It occurs in languages such as Pará Arára[1] and Sercquiais.[citation needed]

Only a few languages contrast voiced and voiceless bilabial trills phonemically – e.g. Mangbetu of Congo and Ninde of Vanuatu.[2][3]

There is also a very rare voiceless alveolar bilabially trilled affricate, [t̪͡ʙ̥] (written ⟨tᵖ̃⟩ in Everett & Kern) reported from Pirahã and from a few words in the Chapacuran languages Wariʼ and Oro Win. The sound also appears as an allophone of the labialized voiceless alveolar stop /tʷ/ of Abkhaz and Ubykh, but in those languages it is more often realised by a doubly articulated stop [t͡p]. In the Chapacuran languages, [tʙ̥] is reported almost exclusively before rounded vowels such as [o] and [y].

Features

Features of the bilabial trill:

Occurrence

Language Word IPA Meaning Notes
Pará Arára[1] [ʙ̥utakeni] 'small and round cultivated field'
Kom bɨmɨ [ʙ̥ɨmɨ] 'to believe'
Neverver[4] [naɣaᵐʙ̥] 'fire, firewood'
Pará Arára[5] [ʙ̥uta] 'to throw away'
Ubykh[6] тваҳəбза/tuaqhəbza [t͡ʙ̥aχəbza] 'Ubykh language' Allophone of /tʷ/. See Ubykh phonology
Wariʼ tpotpowe [t͡ʙ̥ot͡ʙ̥oweʔ] 'chicken'

Notes

  1. ^ a b de Souza, Isaac Costa (2010). "3". A Phonological Description of “Pet Talk” in Arara (MA). University of North Dakota. Retrieved 2020-03-30.
  2. ^ Linguist Wins Symbolic Victory for 'Labiodental Flap'. NPR (2005-12-17). Retrieved on 2010-12-08.
  3. ^ LINGUIST List 8.45: Bilabial trill. Linguistlist.org. Retrieved on 2010-12-08.
  4. ^ See pp.33-34 of: Barbour, Julie (2012). A Grammar of Neverver. Germany: Mouton de Gruyter. ISBN 9783110289619.
  5. ^ de Souza, Isaac Costa (2010). "3". A Phonological Description of “Pet Talk” in Arara (PDF) (MA). SIL Brazil. Archived from the original (PDF) on 2013-10-12. Retrieved 2014-01-09.
  6. ^ Ladefoged (2005:165)