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English definition of “careless”

careless

adjective  /ˈkeər·ləs/ us  

careless adjective (WITHOUT ATTENTION)

not using enough care: Careless drivers cause accidents. My son’s schoolwork is often careless and sloppy.
carelessly
adverb  /ˈker·lə·sli, ˈkær-/ us  
She carelessly left her purse on the train.
carelessness
noun [U]  /ˈker·lə·snəs, ˈkær-/ us  
Carelessness leads to shoddy work.
(Definition of careless from the Cambridge Academic Content Dictionary © Cambridge University Press)
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