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bust–up

1 ENTRIES FOUND:
bust–up /ˈbʌstˌʌp/ noun
plural bust–ups
bust–up
/ˈbʌstˌʌp/
noun
plural bust–ups
Britannica Dictionary definition of BUST–UP
[count] informal
: the end of a relationship, marriage, etc. : breakup
British : a very bad argument or disagreement : a quarrel or fight