break·up 
/ˈbreɪkˌʌp/ noun
plural break·ups /ˈbreɪkˌʌp/ noun 1 : the end of a relationship, marriage, etc. [count] ▪ Money problems often lead to marital breakups. ▪ She's just gone through a bad/painful breakup with her boyfriend. [noncount] ▪ He began drinking heavily following the breakup of his marriage. ▪ a couple heading for marital breakup 2 [noncount] : the separation of something into smaller parts or pieces
▪ What caused the breakup of the Roman Empire? ▪ the breakup of a monopoly ▪ the breakup of an asteroid as it hits the Earth's atmosphere — see also break up at 1break
▪ What caused the breakup of the Roman Empire? ▪ the breakup of a monopoly ▪ the breakup of an asteroid as it hits the Earth's atmosphere — see also break up at 1break
