Definitions

crazy

[krey-zee] / ˈkreɪ zi /

ADJECTIVE

mentally strange

Synonyms

STRONGEST

insane kooky mad nuts nutty silly wacky

STRONG

ape berserk cuckoo lunatic potty psycho screwball

WEAK

barmy bats in the belfry batty bonkers cracked crazed daft delirious demented deranged dingy dippy erratic flaky flipped flipped-out freaked-out fruity idiotic mad as a March hare mad as a hatter maniacal mental moonstruck nutty as fruitcake of unsound mind out of one's mind out of one's tree out to lunch round the bend screw loose screwy touched unbalanced unglued unhinged unzipped

Antonyms

STRONGEST

balanced calm collected rational reasonable sane sound

WEAK

realistic responsible sensible

ADJECTIVE

unrealistic, fantastic

Synonyms

STRONGEST

absurd bizarre foolish goofy insane irresponsible ludicrous odd outrageous preposterous ridiculous silly strange weird

STRONG

eccentric loony wild

WEAK

balmy beyond all reason cockeyed derisory fatuous foolhardy half-baked harebrained idiotic ill-conceived impracticable imprudent inane inappropriate nonsensical out of all reason peculiar puerile quixotic senseless short-sighted unworkable

Antonyms

STRONGEST

logical normal rational reasonable sensible usual

WEAK

balanced believeable realistic responsible sane

ADJECTIVE

infatuated, in love

Synonyms

STRONGEST

hysterical mad passionate

STRONG

eager keen wild

WEAK

ardent beside oneself devoted enamored fanatical smitten zealous

Antonyms

STRONGEST

unenthusiastic

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.

Dr. Maher says the concept initially sounded "crazy," but intriguing enough to investigate further.

From Science Daily • May 15, 2026

And the first picture that came in was this buzz cut, crazy, goggle-wearing character.

From Los Angeles Times • May 13, 2026

"I feel the same as I did 50 years ago. It's crazy," he asserted on Monday.

From Barron's • May 12, 2026

"He's just crazy, he's always running around, climbing over things and jumping off stuff," O'Connor said.

From BBC • May 11, 2026

I kept my chatting to a minimum for the rest of that day, lest I drove my aunt crazy with conversation until she marched me back to the orphan asylum.

From "The Detective's Assistant" by Kate Hannigan

crazy

Example Sentences

Related Words