Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “crack up (someone)”

crack up (someone)

slang phrasal verb with crack    /kræk/ verb
to laugh with great enthusiasm , or to cause someone to laugh in this way: The stories they told cracked me up.
(Definition of crack up (someone) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of crack up (someone)

Word of the Day

familiarity

a good knowledge of something, or the fact that you know it so well

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More