unround

[uhn-round]

verb (used with object) Phonetics.

to articulate (an ordinarily rounded vowel) without rounding the lips; delabialize.

Compare round¹(def 55c), spread(def 14b).

Origin of unround

First recorded in 1605–15; un-² + round¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018