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English definition of “bust up”

bust up

mainly US informal phrasal verb with bust     /bʌst/ verb [T] (bust or US busted, bust or US busted)
to end a relationship after an angry argument: She's bust up with Carlo. → See also bust-upEnding relationships and divorce
(Definition of bust up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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