corroborate

To support or enhance the believability of a fact or assertion by the presentation of additional information that confirms the truthfulness of the item.

The testimony of a witness is corroborated if subsequent evidence, such as a coroner's report or the testimony of other witnesses, substantiates it.

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corroborate v. to confirm and sometimes add substantiating (reinforcing) testimony to the testimony of another witness or a party in a trial. (See: corroborating evidence)

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corroborate verb acknowledge, adduce evidence, advocate, affirm, assent, assure, attest, authenticate, aver, avouch, bear out, bear witness, bolster up, buttress, call to witness, certify, circumstantiate, comprobare, confirm, defend, document, endorse, fortify, guarantee, justify, maintain, manifest, prove, ratify, reassure, reinforce, sanction, strengthen, subscribe, substantiate, support, sustain, testify to, undersign, uphold, uphold in evidence, validate, verify, vouch for, warrant
Associated concepts: corroborating evidence, corroborating witness

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See also: adduce, attest, bear, certify, confirm, countenance, countersign, demonstrate, document, ensure, establish, prove, quote, show, substantiate, sustain, uphold, validate, verify, vouch, witness