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English definition of “bad”

bad

adjective     /bæd/ (worse, worst)
NOT PLEASANT A1 not pleasant : bad weather bad news a bad dream My phone bill was even worse than I'd expected . He's in a bad mood today.Not of good qualityRubbish and wasteInformal words for badSerious and unpleasantNot attractive to look atInformal words for bad
LOW QUALITY A2 of low quality : bad behaviour The service was really bad. He's always been bad at UK maths /US math .Not of good qualityRubbish and wasteInformal words for bad
SEVERE B1 very serious or severe : a bad injury the worst flooding for years Serious and unpleasantNot attractive to look atInformal words for badVery and extremeComplete and wholeIntensifying expressions
NOT LUCKY B1 not lucky , not convenient , or not happening how you would like: It was just bad luck that she heard us. Is this a bad time to ask ?Good luck and bad luck
not bad A2 satisfactory : "There are about 10 people in a group ." "Oh well, that's not bad." That's not bad for such a small company .Informal words for goodGood, better and bestQuite good, or not very good
be bad for sb/sth A2 to be harmful for someone or something: Looking at a computer screen for too long can be bad for your eyes . The negative publicity has been bad for business .Damaging and spoilingDestroying and demolishing
feel bad about sth/doing sth B1 to feel guilty or sorry about something that has happened : I felt bad about letting her down.Feeling sad and unhappy
too bad B1 mainly US informal used to say that you are sorry about a situation : "He didn't get the job ." "Oh, that's too bad."Sympathy and compassion used to say that nothing can be done to change a situation : I know you don't want to go but it's too bad, we have to.Unkind, cruel and unfeelingViolent or aggressiveTreating people or animals badlyInsults and abuse
EVIL B1 evil : She's a really bad person .Morally wrong and evilDishonest
NOT FRESH B2 Bad food is not fresh and cannot be eaten .Not pleasant to eat or drink
PAINFUL [always before noun] If you have a bad arm , leg , heart , etc , there is something wrong with it and it is painful . → See also bad blood, be in sb's good/bad booksPain and painful
(Definition of bad adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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