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Labiodental consonant

Tongue shape

In phonetics, labiodentals are consonants articulated with the lower lip and the upper teeth.

Labiodental consonant in IPA

The labiodental consonants identified by the International Phonetic Alphabet are:

IPA Description Example
Language Orthography IPA Meaning
voiceless labiodental stop Greek σάπφειρος [ˈsafiro̞s̠] sapphire
voiced labiodental stop Sika Allophone of /ⱱ/ in careful pronunciation.
p̪͡f voiceless labiodental affricate Tsonga N/A [tiɱp̪͡fuβu] 'hippos'
b̪͡v voiced labiodental affricate Tsonga N/A [ʃileb̪͡vu] 'chin'
ɱ labiodental nasal English symphony [ˈsɪɱfəni] 'symphony'
f voiceless labiodental fricative English fan [fæn] 'fan'
v voiced labiodental fricative English van [væn] 'van'
ʋ labiodental approximant Dutch wang [ʋɑŋ] 'cheek'
labiodental flap Mono vwa [a] 'send'
File:Xsampa-Oslash.png labiodental click Nǁng ʘoe [ʘ̪oe] meat

The IPA symbol ɧ refers to a sound occurring in Swedish, officially described as similar to the velar fricative [x], but one dialectal variant is a rounded, velarized labiodental, less ambiguously rendered as [fˠʷ]. The labiodental click is an allophonic variant of the (bi)labial click.


The only common labiodental sounds to occur phonemically are the fricatives and the approximant. The labiodental flap occurs phonemically in over a dozen languages, but it is restricted geographically to central and southeastern Africa (Olson & Hajek 2003). With most other manners of articulation, the norm are bilabial consonants (which together with labiodentals, form the class of labial consonants).

[ɱ] is quite common, but in all or nearly all languages in which it occurs, it occurs only as an allophone of /m/ before labiodental consonants such as /v/ and /f/. It has been reported to occur phonemically in a dialect of Teke, but similar claims in the past have proven spurious.

The XiNkuna dialect of Tsonga features a pair of affricates as phonemes. In some other languages, such as Xhosa, affricates may occur as allophones of the fricatives. These differ from the German bilabial-labiodental affricate <pf>, which commences with a bilabial p. All these affricates are rare sounds.

The stops are not confirmed to exist as separate phonemes in any language. They are sometimes written as ȹ ȸ (qp and db ligatures). They may also be found in children's speech or as speech impediments[citation needed].

See also