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 substantiatedverify 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 verifiedauthenticate 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
Examples of substantiate in a Sentence
substantiated his claim to local mountaineering fame with a photo of himself on the summit of Mount McKinley
Mr. MacGregor couldn't substantiate that it was Peter, and not some other rabbit, in the cabbage patch.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'substantiate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.