1. 
[syn: blue, gamy, gamey, juicy, naughty, racy, risque, spicy]
2.  badly behaved; 
- Example: "a naughty boy"
The Collaborative International Dictionary of English v.0.48:
Naughty \Naugh"ty\, a. [Compar. Naughtier; superl.
   Naughtiest.]
   1. Having little or nothing. [Obs.]
      [1913 Webster]
            [Men] that needy be and naughty, help them with thy
            goods.                                --Piers
                                                  Plowman.
      [1913 Webster]
   2. Worthless; bad; good for nothing. [Obs.]
      [1913 Webster]
            The other basket had very naughty figs. --Jer. xxiv.
                                                  2.
      [1913 Webster]
   3. hence, corrupt; wicked. [Archaic]
      [1913 Webster]
            So shines a good deed in a naughty world. --Shak.
      [1913 Webster]
   4. Mischievous; perverse; froward; guilty of disobedient or
      improper conduct; as, a naughty child.
      [1913 Webster]
   Note: This word is now seldom used except in the latter
         sense, as applied to children, or in sportive censure.
         [1913 Webster] Nauheim treatment
WordNet (r) 3.0 (2006):
naughty
    adj 1: suggestive of sexual impropriety; "a blue movie"; "blue
           jokes"; "he skips asterisks and gives you the gamy
           details"; "a juicy scandal"; "a naughty wink"; "naughty
           words"; "racy anecdotes"; "a risque story"; "spicy
           gossip" [syn: blue, gamy, gamey, juicy,
           naughty, racy, risque, spicy]
    2: badly behaved; "a naughty boy"
Moby Thesaurus II by Grady Ward, 1.0:
106 Moby Thesaurus words for "naughty":
   abominable, arrant, atrocious, bad, base, bawdy, black, blamable,
   blameworthy, blue, contrary, criminal, damnable, dark, defiant,
   devilish, dirty, disgraceful, disobedient, disorderly, disruptive,
   evil, execrable, flagitious, flagrant, foul, fractious, frolicsome,
   froward, headstrong, heinous, ill-behaved, immoral, impish,
   improper, indecent, indecorous, indisciplined, infamous,
   iniquitous, insubordinate, intractable, knavish, lawless, lewd,
   low, misbehaving, mischievous, monstrous, nefarious, nonconforming,
   not respectable, obscene, obstinate, obstreperous, off color,
   off-base, offensive, out-of-line, paw, peccant, perverse, playful,
   pornographic, puckish, rank, raunchy, recalcitrant, recusant,
   refractory, reprehensible, reprobate, ribald, risque, roguish,
   rowdy, rowdyish, ruffianly, scampish, scandalous, self-willed,
   shameful, sinful, smutty, transgressive, unbehaving, uncomplying,
   undisciplined, unduteous, undutiful, unforgivable, ungovernable,
   unmanageable, unpardonable, unruly, unspeakable, unworthy, vicious,
   vile, villainous, violative, vulgar, wayward, wicked, willful,
   wrong