mischievous

adjective2

1. •
   Troublesome, cheeky, badly behaved, impish, naughty, disobedient; showing a fondness for causing trouble in a playful way and liking to have fun by playing harmless tricks on people or doing things they are not supposed to do.

   • Matthew had a twin brother called Edward, who was always mischievous and badly behaved.
2. •
   Causing mischief; injurious.

   • ...; that good and bad actions at present are naturally rewarded and punished, not only as beneficial and mischievous to society, but also as virtuous and civious; ... — 1793