Validate
Antonyms of VALIDATE
- veto, refuse, reject, vitiate, invalidate, disprove, repudiate, assume, contest, guess, disavow, disagree, avoid, object, gainsay, oppose, dispute, void, annul, disallow, suspect, nullify, contradict, challenge, quash, discredit, disapprove, deny, surmise, question, disclaim, allege, conjecture, presume, rebut, refute.