Source : Webster's Revised Unabridged Dictionary (1913)

Delusory \De*lu"so*ry\a.
   Delusive; fallacious. --Glanvill.

Source : WordNet®

delusory
     adj : causing one to believe what is not true or fail to believe
           what is true; "deceptive calm"; "a delusory pleasure"
           [syn: {deceptive}]