\ˈkrak-ˌəp \

Definition of crack-up 

(Entry 1 of 2)

1 : crash, wreck an automobile crack-up

2a : a mental collapse : nervous breakdown his wife's death brought on his crack-up

b : collapse, breakdown

crack up


Definition of crack up (Entry 2 of 2)

transitive verb

1 : praise, tout sense 1 wasn't all that it was cracked up to be

2 : to damage or destroy (a vehicle) by crashing crack up a car

3 : to cause to laugh out loud that joke really cracks him up

intransitive verb

1 : to damage or destroy a vehicle (as by losing control) cracked up on a curve

2 : to laugh out loud

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Synonyms & Antonyms for crack-up

Synonyms: Noun

breakdown, nervous breakdown, tailspin

Synonyms: Verb

acclaim, accredit, applaud, cheer, hail, laud, praise, salute, tout

Antonyms: Verb

knock, pan, slam

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Examples of crack-up in a Sentence


that sports car isn't all it's cracked up to be the movie is being cracked up as the blockbuster of the summer

Recent Examples on the Web: Verb

Plus, having a surgery like the one Dr. Holmes described (known as a labiaplasty) isn't all it's cracked up to be. Editors, Seventeen, "Is My Vagina Normal?," 18 Oct. 2018 There are shots of the three artists camping it up, with Iglesias cracking up with laughter at the end of the clip. Billboard Staff, Billboard, "Descemer Bueno and Enrique Iglesias Share New Video, 'Nos Fuimos Lejos': Watch," 7 Apr. 2018 Photos of the Queen and Meghan cracking up together quickly went viral, but some people couldn't help but notice the woman in black hovering behind the monarch's shoulder. Caroline Picard, Good Housekeeping, "Answers to Everything You've Been Googling About Meghan Markle and the Queen Today," 15 June 2018 This continues until Torres loses the staring contest and cracks up. Olivia Harrison,, "The Most Hilarious, Over-The-Top Moments From Nailed It! Season 2," 29 June 2018 The trick was to combine horizontal drilling, enabling each well to fan out across a wide area, with industrial-scale hydraulic fracturing, or fracking, to crack up the innards of tight rock. Jeffrey Ball, Fortune, "Photographing The Permian Basin," 25 May 2018 As the audience cracked up, Comey smirked, and took another big sip of wine. Emily Yahr,, "'I'm like a breakup he can't get over': James Comey joins Stephen Colbert and mocks Trump," 18 Apr. 2018 Case in point: Orlando Baxter, who is totally making people crack up on purpose. Michael Andor Brodeur,, "The Weekender: Boston calls, ‘Solo’ stalls, ‘Fall’ spills, everyone grills," 24 May 2018 There is a growing belief among some analysts that the Democratic blue wave won’t be all its cracked up to be. Michael Smolens,, "Election prospects cast pall over California GOP convention," 4 May 2018

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

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First Known Use of crack-up


circa 1926, in the meaning defined at sense 1


1829, in the meaning defined at transitive sense 1

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Statistics for crack-up

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Time Traveler for crack-up

The first known use of crack-up was in 1829

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More Definitions for crack-up



English Language Learners Definition of crack-up

: an accident in which a vehicle is badly damaged



Kids Definition of crack-up

2 : crash entry 2 sense 3, wreck My car received minor damage in the crack-up.

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More from Merriam-Webster on crack-up

Rhyming Dictionary: Words that rhyme with crack-up

Thesaurus: All synonyms and antonyms for crack-up

Spanish Central: Translation of crack-up

Nglish: Translation of crack-up for Spanish Speakers

Comments on crack-up

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a soft lustrous wool fabric with mohair

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