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English definition of “careless”

careless

adjective (NO ATTENTION)    /ˈkeə.ləs/ US  /ˈker-/
B1 not taking or showing enough care and attention: My son's teacher says that his work is often rather careless. He made a careless remark (= one made without thinking) about her appearance that really upset her.Not paying attentionTreating as unimportantNeglecting and ignoring carelessly     /-li/ adverb B2 He told me off for driving carelessly.Not paying attentionTreating as unimportantNeglecting and ignoringCalm and relaxed carelessness     /-nəs/ noun [U] Not paying attentionTreating as unimportantNeglecting and ignoringPleasure and happiness
(Definition of careless adjective (NO ATTENTION) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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