: '''Rontadur ezogweuzek''': the lips protrude like a tube, as when [[kiss]]ing; the inner surface of the lips is exposed.
Usually, back rounded vowels are exolabial, while front rounded vowels are endolabial.
However, in [[Japanese language|Japanese]], the back high vowel is endolabial.
[[Swedish (language)|Swedish]] is unusual in that dialects of it make a [[phoneme|phonemic]] distinction between the two types, having unrounded, endolabial, and exolabial front [[close-mid vowel]]s.
There is no dedicated IPA diacritic to represent this contrast, and without disambiguation both the word "rounded" and the symbols for the rounded vowels are understood to refer to exolabial rounding.