Source : Webster's Revised Unabridged Dictionary (1913)

Illusive \Il*lu"sive\, a. [See {Illude}.]
   Deceiving by false show; deceitful; deceptive; false;
   illusory; unreal.

         Truth from illusive falsehood to command. --Thomson.

Source : WordNet®

illusive
     adj : based on or having the nature of an illusion; "illusive
           hopes of of finding a better job"; "Secret activities
           offer presidents the alluring but often illusory
           promise that they can achieve foreign policy goals
           without the bothersome debate and open decision that
           are staples of democracy" [syn: {illusory}]