validate Antonyms

invalidate disprove rescind repudiate repeal reject refute refuse acquire the right rebut quash overturn oppose nullify undo unmarry veto assess the situation address concerns acknowledge feelings watergate give the lie to turn down counter check negate criticize throw out swallow up void vitiate lid disannul cancel blame ban avoid assume assault assail arbitrate annul annihilate abrogate abolish cassation censure challenge gainsay forbidder exterminate