/ ˈnɔːti; NAmE / adjective ( naugh·tier , naugh·ti·est )
1.
( especially of children ) behaving badly; not willing to obey :
a naughty boy / girl
( humorous )
I'm being very naughty—I've ordered champagne!
2.
( informal , often humorous ) slightly rude; connected with sex
SYN risqué :
a naughty joke / word
► naugh·tily adverb
► naugh·ti·ness noun [ U ]
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WORD ORIGIN
late Middle English : from naught + -y . The earliest recorded sense was possessing nothing ; the sense wicked also dates from late Middle English , and gave rise to the current senses.