de·ceiv·able \-sēvəbəl\adjective Etymology: Middle English, modification (probably influenced by deceiven to deceive) of Middle French decevable, from Old French, from deceivre, decevoir + -able 1.archaic: marked by deceit : deceitful, deceptive 2.archaic: capable of being deceived : liable to be misled • de·cei·va·bly\-blē\adverb, archaic