Voiceless dentolabial fricative

The voiceless 'dentolabial fricative' is a type of consonantal sound used in some dialects of Greenlandic.
Whereas a typical voiceless labiodental fricative is articulated with the upper teeth contacting the lower lip, a voiceless dentolabial fricative is articulated in the opposite direction, with the lower teeth contacting the upper lip. While the International Phonetic Alphabet has no symbol to transcribe this distinction, the extIPA uses the diacritic, the above variant of the traditional IPA symbol for dentalization, to indicate dentolabial articulation in the context of labial consonants. This sound can therefore be transcribed with the symbol, as is used in the context of this article.

Features

The features of the voiceless dentolabial fricative are:

Its place of articulation is dentolabial, which means it is articulated with the upper lip and the lower teeth.