1. To put or bring into credit; to invest with credit or authority; to sanction. His censure will . . . accredit his praises. Cowper. These reasons . . . which accredit and fortify mine opinion. Shelton. 2. To send with letters credential, as an ambassador, envoy, or diplomatic agent; to authorize, as a messenger or delegate. Beton . . . was accredited to the Court of France....