The Collaborative International Dictionary of English v.0.48:

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.
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         Language altogether deceptive, and hiding the deeper
         reality from our eyes.                   --Trench.
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   Deceptive cadence (Mus.), a cadence on the subdominant, or
      in some foreign key, postponing the final close.
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