Validate

Validate, confirm, corroborate, substantiate, verify, and authenticate all mean to attest to the truth or validity of something. Validate implies establishing validity by authoritative affirmation or factual proof (“a hypothesis validated by experiments”). Confirm implies the removing of doubts by an authoritative statement or indisputable fact (“evidence that confirmed the reports”). Corroboratesuggests the strengthening of what is already partly established (“witnesses who corroborated the story”). Substantiate implies the offering of evidence that sustains the contention (“claims that have yet to be substantiated”). Verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at (“statements that have been verified”). Authenticate implies establishing genuineness by legal or official documents or expert opinion (“handwriting experts who authenticated the diaries”).