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Synonyms

fantastic

American  
[fan-tas-tik] / fænˈtæs tɪk /

adjective

  1. extraordinarily good; excellent.

    a fantastic restaurant.

  2. Also fantastical

    1. conceived or appearing as if conceived by an unrestrained imagination; odd and remarkable; bizarre; grotesque.

      The most fantastic rock formations are visible from the high plateau of the park’s rim trail.

      Artists rendered fantastic designs in the margin of the manuscript.

    2. fanciful or capricious, as persons or their ideas or actions.

      We never know what that fantastic creature will say next.

    3. imaginary or groundless in not being based on reality; foolish or irrational.

      You can’t let these fantastic fears of yours control your life.

    4. extravagantly fanciful; marvelous.

      The scenery and lighting they created for the dream sequences are truly fantastic!

    5. incredibly great or extreme; exorbitant.

      The rich are spending fantastic sums of money, even in this economy.

    6. highly unrealistic or impractical.

      They hatched a fantastic scheme to make a million dollars betting on horse races.


fantastic British  
/ fænˈtæstɪk /

adjective

  1. strange, weird, or fanciful in appearance, conception, etc

  2. created in the mind; illusory

  3. extravagantly fanciful; unrealistic

    fantastic plans

  4. incredible or preposterous; absurd

    a fantastic verdict

  5. informal very large or extreme; great

    a fantastic fortune

    he suffered fantastic pain

  6. informal very good; excellent

  7. of, given to, or characterized by fantasy

  8. not constant; capricious; fitful

    given to fantastic moods

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. archaic a person who dresses or behaves eccentrically

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See bizarre.

Other Word Forms

Etymology

Origin of fantastic

First recorded in 1350–1400; Middle English fantastik “pertaining to the imaginative faculty,” from Medieval Latin fantasticus, variant of Late Latin phantasticus, from Greek phantastikós “able to present the appearence (of something),” derivative of phantázein “to make present to the eye or mind” (akin to phānós “light, bright,” phaínein “to bring to light, cause to appear”) + -tikos -tic

Explanation

The adjective fantastic has two meanings — extraordinarily brilliant or ludicrously far-fetched. So when your boss calls your suggestion of work-at-home-in-your-bathrobe-Fridays for the whole office fantastic, be sure you know which one he means. We get fantastic from the Latin phantasticus, meaning “imaginary.” Sometimes it’s still used that way: If you call a unicorn a fantastic beast, you’re not paying it a compliment; you’re saying it exists only in fairy tales. Most often, though, fantastic means strikingly out-of-the-ordinary. It can be complimentary ("You got an A? Fantastic!") or disparaging ("He was always foolishly unrealistic, but trying to reach the moon using a balloon tied to his bicycle was his most fantastic idea yet.").

Keep Reading on Vocabulary.com

Vocabulary lists containing fantastic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Gyllenhaal co-produced the film and turned in a fantastic, moving performance.

From Salon • May 27, 2026

He has been fantastic and it's crazy to me that he is not Spain's number one.

From BBC • May 24, 2026

He has been fantastic playing in two different positions.

From BBC • May 24, 2026

Audiences trickling back into theaters deserve to see something fantastic.

From Los Angeles Times • May 22, 2026

They kept swiveling their eyes this way and that to discover who in Saint Petersburg society might notice them with their new royal friend and start some fantastic rumor as a result.

From "The Long-Lost Home" by Maryrose Wood

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