refute

Synonyms: abnegate argue against blow sky high break burn burn down cancel cancel out confute contend contradict contravene convict counter crush debate demolish disclaim disconfirm dispose of disprove dispute evert explode exposé gainsay give the lie to give thumbs down to invalidate negate oppose overthrow parry quash rebut reply to repudiate shoot down shoot full of holes show up silence squelch take a stand against tear down top

Antonyms: endorse prove ratify sanction support