cra·​zy | \ ˈkrā-zē How to pronounce crazy (audio) \
crazier; craziest

Definition of crazy

 (Entry 1 of 3)

1a : full of cracks or flaws : unsound … they were very crazy, wretched cabins …— Charles Dickens
b : crooked, askew
2a : not mentally sound : marked by thought or action that lacks reason : insane sense 1b yelling like a crazy man not used technically
b(1) : impractical a crazy plan
(2) : erratic crazy drivers
c : being out of the ordinary : unusual a taste for crazy hats
3a : 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
like crazy
: to an extreme degree everyone dancing like crazy


plural crazies

Definition of crazy (Entry 2 of 3)

: one who is or acts crazy especially : such a one 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



Definition of crazy (Entry 3 of 3)

: extremely, wildly crazy good

Other Words from crazy


crazily \ ˈkrā-​zə-​lē How to pronounce crazy (audio) \ adverb
craziness \ ˈkrā-​zē-​nəs How to pronounce crazy (audio) \ noun

Synonyms & Antonyms for crazy

Synonyms: Adjective

Synonyms: Noun

Antonyms: Adjective

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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. one unsympathetic homeowner insisted that all homeless people are crazies Adverb I bought some crazy good stuff there. See More
Recent Examples on the Web: Adjective At least the crazy heat that found Death Valley was not a threat to the all-time record. John Bacon, USA TODAY, 12 June 2022 Both kids and parents alike will go crazy for these juice boxes, which are shelf-stable and slip into most totes and coolers without bulky can or bottle packaging. Zee Krstic, Good Housekeeping, 6 June 2022 The Detroit Tigers just added a few more surprising twists to this crazy, unpredictable season. Jeff Seidel, Detroit Free Press, 16 May 2022 Abbate said his research has shown that bees do go crazy for tallow trees. Dennis Pillion |, al, 8 May 2022 The energy in the room was crazy, and everybody loved it. Carl Lamarre, Billboard, 14 Apr. 2022 The draft is crazy these days with all the media stuff and pictures - not real into that. Dave Clark, The Enquirer, 19 May 2022 The possibility of Intuit building a competitor isn’t crazy. Jon Markman, Forbes, 18 May 2022 There are certain current affairs which are crazy and give rise to anxiety. Manori Ravindran, Variety, 18 May 2022 Recent Examples on the Web: Noun The campus crazies demanding safe spaces seem to have polluted the entire culture with fear and anxiety. Brian T. Allen, National Review, 2 May 2020 Doyle’s message to stir-crazy, nature-seeking folks: Feel free to hike and enjoy the great outdoors. Ron Kroichick,, 25 Apr. 2020 There are four types of winter drivers: plodders, joggers, speeders and crazies. cleveland, 8 Feb. 2020 There are a lot of crazies in the city and a lot of bad guys. Carl Nolte,, 11 Jan. 2020 The Crimson Tide’s student section under first-year coach Nate Oats doesn’t have a catchy new nickname yet, but the hardhat wearing Crimson crazies showed up in force for the home team’s gritty 77-74 victory against Kansas State. Joseph Goodman |, al, 28 Jan. 2020 Please don’t engage with the crazies in the comments. Christina Oehler,, 15 Nov. 2019 Players marveled at the crowd’s enthusiasm after the game, and Gruden kept his tradition of visiting with the crazies after a Raiders win. Jerry Mcdonald, The Mercury News, 14 Sep. 2019 That’s the same thing that the Dayton, Ohio shooter did…You have fringe crazies on all sides. Bill Lambrecht,, 7 Aug. 2019 Recent Examples on the Web: Adverb For a smart woman hyper-alert to the nature of language, Adriaan’s oblique, infrequent text messages create a crazy-making predicament. Washington Post, 13 July 2021 When Teigen and her husband, John Legend, first started trying to have a baby, not getting pregnant felt crazy-making. Jenny Singer, Glamour, 20 Apr. 2021 Then the internet started going crazy over whipping instant coffee and shortcut recipes. Katlyn Moncada, Better Homes & Gardens, 19 May 2020 Of course, Amy's fans are going crazy over the engagement announcement. Kayla Keegan, Good Housekeeping, 20 Sep. 2019 The twitter world is going crazy over this epic pitch by Oliver Drake of the Tampa Bay Rays. Rhett Allain, WIRED, 31 July 2019 While everyone is going crazy over the deals at Amazon for Prime Day right now, Newegg is sneaking through the back door of the bargain basement with its FantasTech sale. Ian Paul, PCWorld, 17 July 2018 The Fake News is going crazy making up false stories and using only unnamed sources (who don’t exist). Ryan Teague Beckwith, Time, 7 June 2018 The Fake News is going crazy making up false stories and using only unnamed sources (who don’t exist). Ryan Teague Beckwith, Time, 7 June 2018 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crazy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of crazy


1566, in the meaning defined at sense 1a


1867, in the meaning defined above


1887, in the meaning defined above

History and Etymology for crazy


see craze entry 1


see craze entry 1


see craze entry 1

Learn More About crazy

Dictionary Entries Near crazy



crazy ant

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Statistics for crazy

Last Updated

15 Jun 2022

Cite this Entry

“Crazy.” Dictionary, Merriam-Webster, Accessed 26 Jun. 2022.

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More Definitions for crazy


cra·​zy | \ ˈkrā-zē How to pronounce crazy (audio) \
crazier; craziest

Kids Definition of crazy

1 : having a severe mental illness : insane
2 : not sensible or logical a crazy idea
3 : very excited or pleased They're crazy about their new house.
4 : very annoyed This song makes me crazy.

Other Words from crazy

crazily \ ˈkrā-​zə-​lē \ adverb
craziness \ -​zē-​nəs \ noun

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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