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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.

In the 1980s, "we were told that free trade and globalisation were the most fantastic things, and in Brazil we were rather against them," owing to poor competitiveness, Lula said.

From Barron's • Apr. 21, 2026

“These were just fantastic groves. Not anything left.”

From Slate • Apr. 20, 2026

“The lake is fantastic, but there were a lot of looky-loos coming around all the time, and I just never felt like I could get away,” said Adam, 49.

From The Wall Street Journal • Apr. 18, 2026

Becky described the programme as "a fantastic move forward in access to training".

From BBC • Apr. 14, 2026

They suspect that this empty theater into which they’ve stumbled is preparing to stage the most fantastic financial drama they’ll ever see, but they don’t know that, either.

From "The Big Short" by Michael Lewis