Voiceless labiodental affricate

A voiceless labiodental affricate ( in IPA) is a rare affricate consonant that is initiated as a labiodental stop and released as a voiceless labiodental fricative.

The XiNkuna dialect of Tsonga has this affricate, as in "hippopotami" and aspirated  "distance" (compare  "tortoise", which shows that the stop is not epenthetic), as well as a voiced labiodental affricate,, as in  "chin". There is no voiceless labiodental fricative in this dialect of Tsonga, only a voiceless bilabial fricative, as in  "finished". (Among voiced fricatives, both and  occur, however.)

German has a similar sound in Pfeffer ('pepper') and Apfel  ('apple'). Phonotactically, this does not occur after long vowels, diphthongs or. It differs from a true labiodental affricate in that it starts out bilabial but then the lower lip retracts slightly for the frication.