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English definition of “mischievous”

mischievous

adjective uk   /ˈmɪs.tʃɪ.vəs/ us  
behaving in a way, or describing behaviour, that is slightly bad but is not intended to cause serious harm or damage: She has a mischievous sense of humour. a book about the mischievous antics of his ten-year-old daughter expressing or suggesting mischief: a mischievous grin describes behaviour or words that are intended to cause harm or trouble: I think these rumours are mischievous.
mischievously
adverb uk   /-li/ us  
to grin mischievously
mischievousness
noun [U] uk   /-nəs/ us  
(Definition of mischievous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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SMART Thesaurus: Bad but attractive

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