negate

I verb abnegate, abolish, abort, abrogate, annihilate, annul, cancel, confound, confute, contradict, contravene, controvert, counter, counteract, countermand, counterpoise, declare invalid, declare null and void, defeat, demur, deny, deprive of force, destroy, disaffirm, disallow, disavow, disclaim, discontinue, discredit, disprove, dispute, disregard, explain away, falsify, impugn, invalidate, negative, neutralize, nullify, object, obliterate, offset, oppose, override, overrule, overthrow, prohibit, protest, prove the contrary, quash, rebut, recant, refute, render null and void, renounce, repeal, repudiate, rescind, retract, reverse, revoke, rule out, set aside, suppress, suspend, traverse, vacate, veto II index abolish, abrogate (annul), adeem, annul, cancel, challenge, contradict, contravene, controvert, counter, counteract, countercharge, countervail, demonstrate (protest), deny (contradict), disaccord, disaffirm, disallow, disapprove (reject), disavow, disobey, disown (deny the validity), disprove, dissent (withhold assent), fight (counteract), gainsay, impugn, neutralize, nullify, oppose, prohibit, protest, rebut, recant, refute, repeal, repudiate, rescind, revoke, vacate (void), vitiate