[1] : WordNet (r) 2.0

unrealistic
     adj : not realistic; "unrealistic expectations"; "prices at
           unrealistic high levels" ant: realistic
see also:
realistic 

[2] : Moby Thesaurus II by Grady Ward, 1.0

39 moby thesaurus words for "unrealistic":
   airy, autistic, delusional, delusive, delusory, dereistic,
   fanciful, idealistic, illogical, illusory, imaginary, immaterial,
   impractical, in the clouds, inaccurate, merely nominal, not real,
   otherworldly, poetic, quixotic, romancing, romantic, romanticized,
   starry-eyed, storybook, transcendental, transmundane, unactual,
   unauthentic, unnatural, unpractical, unreal, unrealizable,
   unreasonable, unrepresentative, unsubstantial, unworkable,
   visionary, wish-fulfilling

Unrealistic >> U Words
Unrealistic, definition of term: Unrealistic
unrealistic_pag1.html