vitiate

v 1: corrupt morally [syn: {corrupt}, {pervert}, {demoralize}, {debauch},

{debase}, {profane}, {deprave}, {misdirect}]

2: make imperfect; "nothing marred her beauty" [syn: {mar}, {impair},

{spoil}, {deflower}]

3: take away the legal force of or render ineffective;

"invalidateas a contract" [syn: {invalidate}, {void}]

[ant: {validate}]