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collapse

verb [I] (FAIL)
 
 
/kəˈlæps/

Definition

C2 (of people and business) to suddenly be unable to continue or work correctly: Lots of people lost their jobs when the property market collapsed. Talks between management and unions have collapsed. Share prices collapsed (= became lower suddenly) after news of poor trading.Failing and doing badlyStarting, succeeding and failing in business
(Definition of collapse verb (FAIL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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