Western Mansi is an Uralic language that was described as "probably extinct" in 1988. Although the last speaker is not known, none existed by the end of the 20th century.
The language had strong Russian and Komi influences and considerable dialect differences. Long vowels were diphthongized.
(PM=Present only in Pelym Mansi | ML=Present only in Middle Lozva Mansi)
Diphthongs were listed as and .