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English definition of “careless”

careless

adjective (NO WORRY)    /ˈkeə.ləs/ US  /ˈker-/ literary
relaxed, natural, and free from worry → See also carefreeCalm and relaxed 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 WORRY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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