breakup   
  break‧up /ˈbreɪkʌp/ BrE  AmE  noun [uncountable and countable]   1. the act of ending a marriage or relationship:         the breakup of her marriage   2. the separation of a group, organization, or country into smaller parts    breakup of        the breakup of the Soviet Union    ⇨ break up at ↑break1
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