vitiate
动词 vitiate:
corrupt morally or by intemperance or sensuality
同义词:corrupt, pervert, subvert, demoralize, demoralise, debauch, debase, profane, deprave, misdirect
make imperfect
同义词:mar, impair, spoil, deflower
take away the legal force of or render ineffective
同义词:invalidate, void