negate Synonyms

contradict contravene nullify belie neutralize nullified refuse recant rebut quash overturn overthrow overrule override oppugn neutralized oppose offset nullifying non refute repeal prove wrong cancel out debunk neutralise voiding voided void veto vacate undo stultify revoke revert reverse retract rescind repudiate negative mismate misbelieve counterwork countervail counterpoise countermand countercheck counterbalance counteract counter