Also, fan⋅tas⋅ti⋅cal.
Origin: 1350–1400; ME
fantastik pertaining to the imaginative faculty < ML
fantasticus, var. of LL
phantasticus < Gk
phantastikós able to present or show (to the mind), equiv. to
*phantad-, base of
phantázein to make visible (akin to
phānós light, bright,
phaínein to make appear) +
-tikos -tic 
Related forms: fan⋅tas⋅ti⋅cal⋅ly, adverb
fan⋅tas⋅ti⋅cal⋅ness, fan⋅tas⋅ti⋅cal⋅i⋅ty, noun
Synonyms:
1. Fantastic, bizarre, grotesque share a sense of deviation from what is normal or expected. Fantastic suggests a wild lack of restraint, a fancifulness so extreme as to lose touch with reality: a fantastic scheme for a series of space cities. In informal use, fantastic often means simply “exceptionally good”: a fantastic meal. Bizarre means markedly unusual or extraordinarily strange, sometimes whimsically so: bizarre costumes for Mardi Gras; bizarre behavior. Grotesque implies shocking distortion or incongruity, sometimes ludicrous, more often pitiful or tragic: a grotesque mixture of human and animal features; grotesque contrast between the forced smile and sad eyes: a gnarled tree suggesting the figure of a grotesque human being.