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English definition of “undoing”

undoing

noun [S] uk   /ʌnˈduː.ɪŋ/ formal us  
the cause of someone's failure, or of someone's loss of power or money: Greed has been the undoing of many a businessman.FailuresAccidents and disastersHigher and lower points of achievement
(Definition of undoing from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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