Voiced labial–velar approximant

The voiced labial–velar approximant is a type of consonantal sound, used in certain spoken languages, including English. It is the sound denoted by the letter ⟨w⟩ in the English alphabet; likewise, the symbol in the International Phonetic Alphabet that represents this sound is ⟨w⟩, or rarely [ɰʷ], and the equivalent X-SAMPA symbol is w. In most languages it is the semivocalic counterpart of the close back rounded vowel [u]. In inventory charts of languages with other labialized velar consonants, /w/ will be placed in the same column as those consonants. When consonant charts have only labial and velar columns, /w/ may be placed in the velar column, (bi)labial column, or both. The placement may have more to do with phonological criteria than phonetic ones.

Some languages have a voiced labial–prevelar approximant, which is more fronted than the place of articulation of the prototypical voiced labialized velar approximant, though not as front as the prototypical labialized palatal approximant.