vitiate
(verb)
verb
1. corrupt morally or by intemperance or sensuality
Similar word(s): corrupt, debase, debauch, demoralise, demoralize, deprave, misdirect, pervert, profane, subvert
Definition categories: social, alter, change, modify
2. make imperfect
Similar word(s): deflower, impair, mar, spoil
Definition categories: change, damage
3. take away the legal force of or render ineffective
Similar word(s): invalidate, void