›[T]LAWto sign a document to show that you were present when it was signed by someone else: The will must be attested by two witnesses.The statement was signed and attested by a high court judge.
›[I]LAWto say officially that something is true or accurate: attest to doing sthCouples must attest to being in a committed relationship.attest to sthThe commission demands that Chief Financial Officers personally attest to the accuracy of their financial statements.
›[I]to show that something is true: attest to sthThe decline in sales attests to the fact that the product is out of date.
attestationnoun[C or U]›The report contains an auditor's attestation.