Fantastic Definition

Existing in the imagination; imaginary; unreal.
Fantastic terrors.
Webster's New World
Having a strange or weird appearance; grotesque; odd.
Fantastic designs.
Webster's New World
Unrealistic; irrational.
American Heritage
Strange and unusual; extravagant; capricious; eccentric.
A fantastic plan.
Webster's New World
Seemingly impossible; incredible.
Fantastic progress in science.
Webster's New World
A person who is fantastic in behavior, dress, etc.; eccentric.
Webster's New World

Origin of Fantastic

  • Middle English fantastik imagined from Old French fantastique from Late Latin phantasticus imaginary from Greek phantastikos able to create mental images from phantazesthai to appear fantasy

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle French fantastique

    From Wiktionary

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