careless - definition in the Learner's Dictionary - Cambridge Dictionaries Online

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English definition of “careless”

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careless

adjective
 
 
/ˈkeələs/
B1 not giving enough attention to what you are doing: It was very careless of you to forget your passport. He was fined £250 for careless driving.Not paying attentionTreating as unimportantNeglecting and ignoring
carelessly adverb carelessness noun [U]
(Definition of careless from the Cambridge Learners Dictionary © Cambridge University Press)
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