Legend: unrounded • rounded The close back unrounded vowel, or high back unrounded vowel,[1] is a type of vowel sound used in some spoken languages.

The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɯ⟩.

The close back unrounded vowel can in many cases be considered the vocalic equivalent of the voiced velar approximant [ɰ].

Symbols to the right in a cell are voiced, to the left are voiceless.

Shaded areas denote articulations judged impossible.