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English definition of “casual”

casual

adjective uk   /ˈkæʒ.u.əl/ us  

casual adjective (INFORMAL)

B1 describes clothes that are not formal or not suitable for special occasions: casual clothesThe style, appearance, and make-up of clothes

casual adjective (NOT INTERESTED)

not taking or not seeming to take much interest: The psychologist's attitude seemed far too casual, even brutal. Security around the conference hotel seemed almost casual. Although close to tears, she tried to make her voice sound casual.Lacking interest and enthusiasmUnwilling and reluctantNot showing or feeling emotions

casual adjective (TEMPORARY)

C2 [before noun] not regular or fixed: casual labour/labourers/workers casual sexEmployment status and types of workTemporaryShort in timeTemporaryShort in time

casual adjective (CHANCE)

B2 [before noun] not serious or considered, or done by chance: It was just a casual comment, I didn't mean it to be taken so seriously. To a casual observer, everything might appear normal.Chance and randomness
casually
adverb uk   /-i/ us  
B2 She was dressed casually in shorts and a T-shirt.The style, appearance, and make-up of clothesLacking interest and enthusiasmUnwilling and reluctantNot showing or feeling emotionsEmployment status and types of workTemporaryShort in timeChance and randomness
(Definition of casual from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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