The labiodental nasal is a type of consonantal sound. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɱ⟩. The IPA symbol is a lowercase letter m with a leftward hook protruding from the lower right of the letter. Occasionally it is instead transcribed as an em with a dental diacritic: ⟨m̪⟩.
The voiceless labiodental 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 is often seen, especially in Bantu linguistics, is the qp ligature ⟨ȹ⟩.
The voiceless labiodental approximant is a type of consonantal sound used in some spoken languages. The symbols in the International Phonetic Alphabet that represent this sound are ⟨ʋ̥⟩ and ⟨f̞⟩, and the equivalent X-SAMPA symbols are P_0 (or v_0) and f_o.
A labial fricative is a fricative consonant, whose articulation involves the lips. Several kinds can be distinguished based on whether the articulation involves only the lips or either the teeth or the tongue:
In phonetics, ejective consonants are usually voiceless consonants that are pronounced with a glottalic egressive airstream. In the phonology of a particular language, ejectives may contrast with aspirated, voiced and tenuis consonants. Some languages have glottalized sonorants with creaky voice that pattern with ejectives phonologically, and other languages have ejectives that pattern with implosives, which has led to phonologists positing a phonological class of glottalic consonants, which includes ejectives.