mischief mischief /ˈmɪstʃəf/

noun

1. () Reckless or malicious behavior that causes discomfort or annoyance in others  ( devilry , deviltry , mischief-making , devilment , mischievousness , rascality , roguery , roguishness , shenanigan , mischief )
   reckless or malicious behavior that causes discomfort or annoyance in others
     The mischievous child played pranks on his siblings.
   The mischievous child played pranks on his siblings.
   
2. The quality or nature of being harmful or evil  ( balefulness , maleficence , mischief )
   the quality or nature of being harmful or evil