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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

Trump also spoke of the warmth of his personal relationship with the King - "I think he's fantastic" - and the president said he was looking forward to hosting the King at a state banquet.

From BBC • Mar. 31, 2026

“He’s fantastic… He’s a non-controversial figure because he says, ‘This is the way it’s going to be,’ and that’s the end of it.

From Salon • Mar. 31, 2026

“Now I have bad news. Your fantastic new suit is going to get dirty. You can blame your cousin for it.”

From "The Last Last-Day-of-Summer" by Lamar Giles

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