unround
(-ro̵und′)
transitive verb
- to pronounce (a vowel usually rounded) without rounding of the lips
- to keep (the lips) from being rounded, as in pronouncing the vowel in she
See unround in American Heritage Dictionary 4
transitive verb un·round·ed,
un·round·ing,
un·rounds To pronounce (a sound) with the lips in a flattened or neutral position.