25 synonyms for prove such as bear out, attest, and authenticate. Prove is a verb, and its antonyms are disprove and refute.
Attest, authenticate, bear out, certify, confirm, corroborate, demonstrate, demonstrate the truth of, determine, document, establish evidence, evince, give substance to, manifest, produce/submit evidence, produce/submit proof, ratify, show, show beyond doubt, show to be true, substantiate, validate, verify, and witness to.