crazier; craziest
1
a
usually offensive
: not mentally sound : marked by thought or action that lacks reason : insane sense 1b
yelling like a crazy person
—not used technically
b(1)
: impractical
a crazy plan
(2)
sometimes offensive
: erratic
crazy drivers
c
: being out of the ordinary : unusual
a taste for crazy hats
2
a
: distracted with desire or excitement
a thrill-crazy mob
The fans went crazy when their team won the championship.
b
: absurdly fond : infatuated
He's crazy about the girl.
c
: passionately preoccupied : obsessed
crazy about boats
craziness
noun
plural crazinesses
… an inside view of the craziness of Hollywood and the media moguls who run it.
—
Emily Melton
Emily Melton
plural crazies
usually offensive
: someone who is or acts mentally unsound
especially
: such a person associated with a radical or extremist political cause
… are convinced that Wilson thinks they're rubes, bumpkins, or crazies, and wants to replace them with a legislature full of moderate clones of himself. —Fred Barnes
Fred Barnes 
Synonyms
Examples of crazy in a Sentence
Adjective
He's been acting kind of crazy lately.
There are a lot of crazy drivers on the streets.
You are crazy to have paid so much for this car.
You would be crazy not to accept their offer!
What a crazy thing to do!
Noun
A bunch of crazies live there.
started yelling in the middle of the store like a crazy man
Adverb
I bought some crazy good stuff there.
Recent Examples on the WebMeghan Rose, Glamour, 9 Feb. 2023
Before getting into the chaos of episode 5, that episode 4 cliff hanger was crazy.
—Calie Schepp, EW.com, 6 Feb. 2023
See all Example Sentences for crazy 
Adjective
Tauruses will go crazy for something chic, functional, and soft to the touch.
—Meghan Rose, Glamour, 9 Feb. 2023
Before getting into the chaos of episode 5, that episode 4 cliff hanger was crazy.
—Calie Schepp, EW.com, 6 Feb. 2023
See all Example Sentences for crazy
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'crazy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
Phrases Containing crazy
Dictionary Entries Near crazy
Cite this Entry
“Crazy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crazy. Accessed 18 Apr. 2024.
Copy Citation
Kids Definition
crazy
adjective
cra·zy
ˈkrā-zē
crazier; craziest
1
: having a diseased or abnormal mind : insane
2
: not sensible or logical
that's a crazy idea
3
: very excited or pleased
crazy about the new car
crazily
adverb
-zə-lē
craziness
noun
-zē-nəs
More from Merriam-Webster on crazy
Nglish: Translation of crazy for Spanish Speakers
Britannica English: Translation of crazy for Arabic Speakers
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