Definition of break up phrasal verb from the Oxford Advanced American Dictionary

 

break up

 phrasal verb
phrasal verb
 
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Phrasal Verbs
  1. 1to separate into smaller pieces The ship broke up on the rocks.
  2. 2 to come to an end Their marriage has broken up. related noun breakup
  3. 3to go away in different directions The meeting broke up at eleven o'clock.
  4. 4 to laugh very hard
  5. 5 when a person who is talking on a cell phone breaks up, you can no longer hear them clearly because the signal has been interrupted

break somebodyup

 
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to make someone laugh very hard Woody Allen just breaks me up.

    break somethingup

     
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  1. 1to make something separate into smaller pieces; to divide something into smaller parts The ship was broken up for scrap metal. Sentences can be broken up into clauses.
  2. 2 to end a relationship, a company, etc. They decided to break up the partnership. related noun breakup
  3. 3to make people leave something or stop doing something, especially by using force Police were called in to break up the fight.

break up (with somebody)

 
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to end a relationship with someone She just broke up with her boyfriend. related noun breakup