Mischief :: Mischief (n.) Harm; damage; esp., disarrangement of order; trouble or vexation caused by human agency or by some living being, intentionally or not; often, calamity, mishap; trivial evil caused by thoughtlessness, or in sport..
Mischief :: Mischief (n.) Cause of trouble or vexation; trouble.
Mischievous :: Mischievous (a.) Causing mischief; harmful; hurtful; -- now often applied where the evil is done carelessly or in sport; as, a mischievous child..