Synonyms for verify

verb

to verify is to prove something to be true or correct by investigation, comparison with a standard, or reference to ascertainable facts some of the dates given in the book could not be verified; to confirm is to establish as true or valid that which was doubtful or uncertain to confirm a rumor; substantiate suggests the producing of evidence that proves or tends to prove the validity of a previous assertion or claim the census figures substantiate his charge; corroborate suggests the strengthening of one statement or testimony by another the witnesses corroborated her version of the event; authenticate implies proof of genuineness by an authority or expert to authenticate a painting; validate implies official confirmation of the validity of something to validate a will