Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

deceptive
     adj 1: causing one to believe what is not true or fail to believe
            what is true; "deceptive calm"; "a delusory pleasure"
            [syn: {delusory}]
     2: tending to deceive or mislead either deliberately or
        inadvertently; "the deceptive calm in the eye of the
        storm"; "deliberately deceptive packaging"; "a misleading
        similarity"; "statistics can be presented in ways that are
        misleading" [syn: {misleading}]