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English definition of “bad”

bad

adjective (PAINFUL)    /bæd/ (worse, worst)
C1 causing or experiencing pain : She can't walk up all those steps , not with her bad leg ! a bad cough Pain and painful badness     /ˈbæd.nəs/ noun [U] the quality of being evil or morally unacceptable : There is goodness and badness in everyone.Morally wrong and evilDishonest
(Definition of bad adjective (PAINFUL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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