Etymology
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vitiate (v.)

"to render vicious, faulty, or imperfect; injure the quality or substance of," 1530s, from Latin vitiatus, past participle of vitiare "to make faulty, injure, spoil, corrupt," from vitium "fault, defect, blemish, crime, vice" (see vice (n.1)). Related: Vitiated; vitiating.

updated on May 08, 2019

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Definitions of vitiate from WordNet

vitiate (v.)
corrupt morally or by intemperance or sensuality;
Synonyms: corrupt / pervert / subvert / demoralize / demoralise / debauch / debase / profane / deprave / misdirect
vitiate (v.)
make imperfect;
Synonyms: mar / impair / spoil / deflower
vitiate (v.)
take away the legal force of or render ineffective;
Synonyms: invalidate / void
From wordnet.princeton.edu, not affiliated with etymonline.