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English definition of “bum”

bum

adjective [before noun]     /bʌm/ slang
bad in quality or not useful: He gave us bum directions, but we eventually found the place.Informal words for badRubbish and wasteSerious and unpleasantNot of good quality
(Definition of bum adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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