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Definitions

fantastic

[fan-tas-tik] / fænˈtæs tɪk /
ADJECTIVE
strange, different; imaginary
Synonyms
STRONGEST
absurd crazy exotic fanciful grotesque imaginative implausible incredible insane ludicrous odd outlandish preposterous ridiculous singular unbelievable unreal weird
WEAK
artificial capricious chimerical comical eccentric erratic extravagant extreme far-fetched fictional foolish foreign freakish hallucinatory illusive irrational mad misleading nonsensical out of sight peculiar phantasmagorical quaint suppositious unlikely wacky whimsical
Antonyms
STRONGEST
balanced believable credible familiar logical normal ordinary plausible rational real realistic sensible serious unimaginative
ADJECTIVE
enormous
Synonyms
STRONGEST
great huge overwhelming tremendous
WEAK
cracking extreme humongous massive monstrous monumental prodigious severe stupendous towering
Antonyms
STRONGEST
insignificant little miniature minute small tiny
ADJECTIVE
wonderful, excellent
Synonyms
STRONGEST
awesome delicious first-rate great marvelous sensational superb unreal
WEAK
A-1 best best ever cat's meow far-out first-class like wow out of sight out of this world primo
Antonyms
STRONGEST
bad inferior insignificant ordinary poor unamazing
WEAK
common commonplace conventional customary familiar unpleasant usual

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.

We have become fantastic at interacting with surfaces, all while our data is harvested and our attention monetized behind the veil of user-friendliness.

From Slate • Apr. 4, 2026

Reg said he will miss the parents and children, whom he describes as "fantastic".

From BBC • Apr. 2, 2026

Ex-frontman Dave Bartram told the BBC Oakes was "an innovator and a fantastic asset to the band".

From BBC • Mar. 30, 2026

There’s some things that are fantastic about it, because in many ways, you’re much better than you were when you were a kid.

From Los Angeles Times • Mar. 26, 2026

And a photograph of her and her fantastic eyebrows.

From "Beast Rider" by Tony Johnston & María Elena Fontanot de Rhoads

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.