Source : Webster's Revised Unabridged Dictionary (1913)

Fantastical \Fan*tas"tic*al\, a.
   Fanciful; unreal; whimsical; capricious; fantastic.

Source : WordNet®

fantastical
     adj 1: existing in fancy only; "fantastic figures with bulbous
            heads the circumference of a bushel"- Nathaniel
            Hawthorne [syn: {fantastic}]
     2: ludicrously odd; "Hamlet's assumed antic disposition";
        "fantastic Halloween costumes"; "a grotesque reflection in
        the mirror" [syn: {antic}, {fantastic}, {grotesque}]