refute Antonyms

accept demonstrate prove reiterate sanction show state substantiate support reconfirm reaffirm ratify profess predicate own make maintain swear testify swear up and down provide evidence swear on bible cross heart unopposed rubberstamp double-check cross-check back up bear witness witness warranting vouch verify validate undersign insist identify avow avouch aver authenticate attest asseverate assert allow agree affirm adopt admit adduce