negate

1 to declare not to be true <this evidence negates his claim that he was not at the scene of the crime> Synonyms contradict, disaffirm, disallow, disavow, disclaim, disconfirm, disown, gainsay, deny, negative, refute, reject, repudiateRelated Words traverse; challenge, confute, disprove, rebut; disagree (with), disputeNear Antonyms accept, adopt, embrace, espouse; affirm, announce, assert, aver, claim, declare, maintain, profess, submit; authenticate, corroborate, substantiate, validate, verifyAntonyms acknowledge, admit, allow, avow, concede, confirm, own

2 to put an end to by formal action <Prohibition was established by the 18th amendment to the U.S. Constitution, only to be negated by the 21st amendment 13 years later> Synonyms abate, abrogate, annul, avoid, cancel, disannul, dissolve, invalidate, abolish, null, nullify, quash, repeal, rescind, roll back, strike down, vacate, voidRelated Words countermand, override, overrule, overturn, veto; abort, call, call off, drop, recall, retract, reverse, revoke, suspend, withdraw; ban, enjoin, forbid, outlaw, prohibit; disallow, dismiss, reject; annihilate, break down, eliminate, eradicate, erase, liquidate, remove, throw out, write offNear Antonyms enact, lay down, legislate; establish, found, institute; formalize, legalize, legitimate, legitimize, validate; pass, ratify; allow, approve, authorize, clear, endorse (also indorse), permit, sanction, warrant; command, decree, mandate, order, prescribe

3 to think not to be true or real <you simply can't negate your feelings for someone, even if they don't feel the same way about you> Synonyms discredit, disbelieveRelated Words deny, reject, repudiate; distrust, doubt, mistrust, suspect; debunk, disprove, refute; deride, pooh-pooh (also pooh), scoff (at)Near Antonyms trustAntonyms accept, believe, credit, swallow