Source : Webster's Revised Unabridged Dictionary (1913)

Naughtily \Naugh"ti*ly\, adv.
   In a naughty manner; wickedly; perversely. --Shak.

Source : WordNet®

naughtily
     adv : in a disobedient or naughty way; "he behaved badly in
           school"; "he mischievously looked for a chance to
           embarrass his sister"; "behaved naughtily when they had
           guests and was sent to his room" [syn: {badly}, {mischievously}]