| Vitiate 1. (v. t.) To make faulty or imperfect; to render defective; to contaminate; to injure the substance or qualities of; to impair; to contaminate; to spoil; as, exaggeration vitiates a style of writing; sewer gas vitiates the air. 2. (v. t.) To cause to fail of effect, either wholly or in part; to make void; to destroy, as the validity or binding force of an instrument or transaction; to annul; as, any undue influence exerted on a jury vitiates their verdict; fraud vitiates a contract. Thesaurus Entries abate, abolish, abrogate, adulterate, alloy, annihilate, annul, bastardize, blemish, bring to nothing, brutalize, buffer, cancel, cancel out, canker, cheapen, coarsen, come to nothing, confound, contaminate, corrupt, corrupted, counterbalance, damage, debase, debauch, debauched, defile, deflower, degenerate, degrade, delete, demoralize, denature, deprave, depraved, depreciate, depress, desecrate, despoil, destroy, devalue, diminish, distort, downgrade, frustrate, harm, hurt, impair, infect, invalidate, lower, mar, misuse, negate, negativate, negative, neutralize, nullify, offset, pervert, perverted, poison, pollute, prejudice, prostitute, quash, ravage, ravish, reduce, revoke, ruin, soil, spoil, stultify, sully, suppress, taint, tarnish, thwart, twist, ulcerate, undermine, undo, violate, vitiated, void, vulgarize, warp, weaken, withdraw |