Deceptive \De*cep"tive\, a. [Cf. F. d['e]ceptif. See {Deceive}.] Tending to deceive; having power to mislead, or impress with false opinions; as, a deceptive countenance or appearance. Language altogether deceptive, and hiding the deeper reality from our eyes. --Trench. {Deceptive cadence} (Mus.), a cadence on the subdominant, or in some foreign key, postponing the final close.