Near-close Near-front Rounded Vowel - Near-close Near-front Protruded Vowel

Catford notes that most languages with rounded front and back vowels use distinct types of labialization, protruded back vowels and compressed front vowels. However, a few languages, such as Scandinavian ones, have protruded front vowels. One of these, Swedish, even contrasts the two types of rounding in front vowels (together with height and duration).

As there are no diacritics in the IPA to distinguish protruded and compressed rounding, old diacritic for labialization, ⟨◌̫⟩, will be used here as an ad hoc symbol for protruded front vowels. Another possible transcription is ⟨ʏʷ⟩ or ⟨ɪʷ⟩ (a near-front near-close vowel modified by endolabialization), but this could be misread as a diphthong.