CERTIFY

transitive verb (-fied; -fying) see: certain Date: 14th century to attest authoritatively: as, confirm , to present in formal communication, to attest as being true or as represented or as meeting a standard, to attest officially to the insanity of, to inform with certainty ; assure , to guarantee (a personal check) as to signature and amount by so indicating on the face, to recognize as having met special qualifications (as of a governmental agency or professional board) within a field , certifier noun Synonyms: see: ~ see: approve