The voiced labiodental plosive or stop is a consonant sound produced like a [b], but with the lower lip contacting the upper teeth, as in [v]. This can be represented in the IPA as ⟨b̪⟩. A separate symbol that is sometimes seen, especially in Bantu linguistics but not recognized by the IPA, is the db ligature ⟨ȸ⟩.
The voiced labiodental plosive is not known to be phonemic in any language. However, it does occur allophonically:
In the Austronesian language Sika, this sound occurs as an allophone of the labiodental flap in careful pronunciation.
The XiNkuna dialect of Tsonga has affricates, [p̪͡f] (voiceless labiodental affricate) and [b̪͡v] (voiced labiodental affricate) (that is, [ȹ͡f] and [ȸ͡v]), which unlike the bilabial-labiodental affricate [p͡f] of German are purely labiodental.
Features of the "voiced labiodental stop":
|Danish||Standard||véd||[b̪̆e̝ːˀð̠˕ˠ]||'know(s)'||Rather short; also described as an approximant [ʋ]. A rare alternative is a fricative [v]. See Danish phonology|
|English||subversive||[sʌb̪ˈvɚsɪv]||'subversive'||Common allophone of /b/ before the labiodentals /f/ and /v/ (although it is also possible for the labiodentals to shift to bilabial /ɸ/ and /β/, respectively, instead).|
|Ibanag||bavi||[bab̪ᵛiː]||ˈpig/pork'||Slightly affricated; allophonic variant of /v/ for some elderly speakers, especially those who lack front teeth. May be a flap /ⱱ/ instead.|
|Sika||[example needed]||Allophone of /ⱱ/ in careful pronunciation.|