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Thesaurus: authenticate

To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.

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  1. v. t. To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.
  2. v. t. To prove authentic; to determine as real and true; as, to authenticate a portrait.
  3. v. establish the authenticity of something
  4. 1. To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit. The king serves only as a notary to authenticate the choice of judges. Burke. 2. To prove authentic; to determine as real and true; as, to authenticate a portrait. Walpole.
  5. v:100 v. establish the authenticity of something