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English definition of “careless”

careless

adjective uk   /ˈkeə.ləs/ us    /ˈker-/

careless adjective (NO ATTENTION)

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

careless adjective (NO WORRY)

literary relaxed, natural, and free from worry
See also
Calm and relaxed
carelessly
adverb uk   /-li/ us  
B2 He told me off for driving carelessly.Not paying attentionTreating as unimportantNeglecting and ignoringCalm and relaxed
carelessness
noun [U] uk   /-nəs/ us  
Not paying attentionTreating as unimportantNeglecting and ignoringPleasure and happiness
(Definition of careless from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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