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English definition of “worst-case scenario”

worst-case scenario

noun [S]    
the most unpleasant or serious thing that could happen in a situation: The study concludes that in a worst case scenario there might be 80,000 cases of the disease.Difficult situations and unpleasant experiencesAccidents and disasters
(Definition of worst-case scenario noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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