definition of
vitiate

[1] #1 vitiate v. [corrupt, pervert, subvert, demoralize, demoralise, debauch, debase, profane, deprave, misdirect] corrupt morally or by intemperance or sensuality; "debauch the young people with wine and women"; "Socrates was accused of corrupting young men"; "Do school counselors subvert young children?"; "corrupt the morals". wn

[2] #2 vitiate v. [mar, impair, spoil, deflower] make imperfect; "nothing marred her beauty". wn

[3] #3 vitiate v. [invalidate, void] take away the legal force of or render ineffective; "invalidate a contract". wn