noun (n)

• wicked and cruel behavior

  jahat dan kejam perilaku

  Synonym:
  deviltry
  

  source: wordnet30
• reckless or malicious behavior that causes discomfort or annoyance in others

  perilaku reckless atau berbahaya yang menyebabkan kesukaran atau mengganggu orang lain

  Synonym:
  devilment, deviltry, mischief, mischief-making, mischievousness, rascality, roguery, roguishness, shenanigan
  

  source: wordnet30
• Conduct suitable to the devil; extreme wickedness; deviltry.

  perilaku yang cocok untuk iblis; extreme kemaksiatan; deviltry.

  source: webster1913