delabialize

verb

de·​la·​bi·​al·​ize ˌdē-ˈlā-bē-ə-ˌlīz 

delabializing; delabialized; delabializes

transitive verb

: to pronounce (a speech sound) without lip rounding : to remove lip rounding from (a speech sound)

delabialization

ˌdē-ˌlā-​bē-​ə-​lə-​ˈzā-​shən 

noun

plural delabializations

Word History

Etymology

de- + labial entry 1 + -ize

First Known Use

circa 1876, in the meaning defined above