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Meaning ofcrack upin English

crack up

Definitions

Verb
1. to laugh heartily; find something amusing
  The audience began to crack up at the comedian's jokes.
  Synonyms:
  laugh amuse entertain delight divert
  Antonyms:
  bore displease offend irritate disgust
2. to break down mentally; suffer a breakdown
  After months of stress, she started to crack up and needed a break.
  Synonyms:
  break down collapse fall apart come undone lose it
  Antonyms:
  hold up keep it together stay strong cope thrive
3. to shatter; fall apart physically
  The old vase began to crack up and eventually fell apart.
  Synonyms:
  shatter break fracture splinter smash fragment disintegrate collapse
  Antonyms:
  intact unbroken whole solid unshattered
Adjective
1. extremely funny; highly amusing
  The movie was so crack up that I couldn't stop laughing.
  Synonyms:
  hilarious amusing entertaining comical laughable humorous side-splitting riotous hysterical
  Antonyms:
  boring unamusing tedious dull unfunny

Base Words