validate

1 to give evidence or testimony to the truth or factualness of <a witness independently validated the policeman's version of events> Synonyms argue, attest, authenticate, bear out, certify, corroborate, substantiate, support, confirm, verify, vindicateRelated Words avouch, back (up), testify (to), vouch (for), witness; guarantee, warrant; affirm, assert, aver, avow, declare, profess; demonstrate, document, establish, prove, reinforce (also reenforce)Near Antonyms contradict, gainsay; deny, disavow, disclaim; challenge, contest, dispute, questionAntonyms disprove, rebut, refute

2 to show the existence or truth of by evidence <the booming economy in and of itself validated the soundness of the government's economic policies> Synonyms demonstrate, document, establish, substantiate, proveRelated Words back (up), buttress, circumstantiate, corroborate; evidence, evince, record, support, uphold, witness; adduce, attest, authenticate, certify, identify; confirm, sustain, verify, vouch; clinch, nail, settle; confess, depose, testifyNear Antonyms challenge, dispute, object; allege, assume, conjecture, guess, presume, surmise, suspectAntonyms disprove, rebut, refute