WordWeb Online

1. The trait of indulging in disreputable pranks
   - prankishness, roguishness
    
2. The quality of being a slippery rascal
   - shiftiness, slipperiness, trickiness
    
3. Reckless or malicious behaviour that causes discomfort or annoyance in others
   - mischief, mischief-making, mischievousness, deviltry, devilry, devilment, roguery, roguishness, shenanigan

Derived forms: rascalities

Type of: badness, dishonesty, misbehavior [US], misbehaviour [Brit, Cdn], mischievousness, misdeed, naughtiness