Dictionary (n.) A letter or writing, usually under seal, conferring some privilege, honor, or power; a document bearing record of a degree conferred by a literary society or educational institution.Thesaurus affidavit attestation authority authorization bill of health brevet certificate certificate of proficiency certification charter concession credential deposition franchise grant letters patent liberty navicert notarized statement note patent royal grant sheepskin sworn statement testamur testimonial ticket visa vise voucher warrant warranty witness |