naugh·ty 
(nôtē)
(nôtē)adj. naugh·ti·er, naugh·ti·est
1. Behaving disobediently or mischievously: a naughty child.
2. Indecent; improper: a naughty wink.
n. pl. naugh·ties
One that is naughty.
[Middle English noughti, wicked, from nought, nothing, evil, from Old English nāwiht, nothing; see NAUGHT.]
naughti·ly adv.
naughti·ness n.