The voiceless labiodental plosive or stop is a consonant sound produced like a [p], but with the lower lip contacting the upper teeth, as in [f]. This can be represented in the IPA as ⟨p̪⟩. A separate symbol not recognized by the IPA that was occasionally seen, especially in Bantu linguistics, is the qp ligature ⟨ȹ⟩.
The voiceless labiodental plosive is possibly not phonemic in any language, though see the entry on Shubi. However, it does occur allophonically. The XiNkuna dialect of Tsonga has affricates, [p̪͡f] and [b̪͡v]. German /p͡f/ ranges between [p̪͡f], [p͡f], and [p͡ɸ].
Features of the voiceless labiodental stop:
|p̪̚||p̪ with no audible release|
|Greek||σάπφειρος||[ˈsap̪firo̞s̠]||'sapphire'||See Modern Greek phonology|
|English||up-front||[ʌp̪ˈfrʌnt]||'up-front'||Common allophone of /p/ before the labiodentals /f/ and /v/ (although it is also possible for the labiodentals to shift to bilabial /ɸ/ and /β/, respectively, instead).|