verify

confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact.

• • confirmed the reports

corroborate suggests the strengthening of what is already partly established.

• • witnesses corroborated his story

substantiate implies the offering of evidence that sustains the contention.

• • the claims have yet to be substantiated

verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at.

• • all statements of fact in the article have been verified

authenticate implies establishing genuineness by adducing legal or official documents or expert opinion.

• • handwriting experts authenticated the diaries

validate implies establishing validity by authoritative affirmation or by factual proof.

• • validated the hypothesis by experiments