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English definition of “naughty”

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naughty

adjective uk   /ˈnɔː.ti/ us    /ˈnɑː.t̬i/

naughty adjective (BADLY BEHAVED)

B2 When children are naughty, or their behaviour is naughty, they behave badly or do not do what they are told to do: Now that's naughty - don't throw food on the floor! Our boss treats us all like naughty children. mainly UK used slightly humorously to describe an adult who has behaved badly or an adult's bad action: "I'm afraid I borrowed your car without asking." "Yes, that was very naughty of you - I needed it at the weekend!"
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naughty adjective (SEXUAL)

informal humorous involving or suggesting sex: The film was shown on television but they cut out all the naughty scenes. He always buys her naughty underwear for her birthday.
naughtily
adverb uk   /-tɪ.li/ us    /-t̬ɪ.li/
naughtiness
noun [U] uk   /-nəs/ us  
(Definition of naughty from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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