Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

crack up

verb

Definition of crack up

  1. transitive verb
  2. 1 :  praise, tout 4 <wasn't all that it was cracked up to be>

  3. 2 :  to damage or destroy (a vehicle) by crashing <crack up a car>

  4. 3 :  to cause to laugh out loud <that joke really cracks him up>

  5. intransitive verb
  6. 1 :  to damage or destroy a vehicle (as by losing control) <cracked up on a curve>

  7. 2 :  to laugh out loud



Examples of crack up

  1. <that sports car isn't all it's cracked up to be>

  2. <the movie is being cracked up as the blockbuster of the summer>



1829

First Known Use of crack up

1829



Seen and Heard

What made you want to look up crack up? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 9, 2016

marked by high spirits and laughter

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

spindrift duvet kittly-benders pince-nez
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ