Definitions of mischief

1. To do harm to.

2. the quality or nature of being harmful or evil

3. Cause of trouble or vexation; trouble.

4. Harm; injury; hurt; damage; misfortune; vexation; tendency to vex or annoy.

5. Evil; injury; a prank.

6. Evil; injury; a prank; a prankish person.

7. Harm; injury; damage; vexatious affair; doing harm or wrong.

8. What turns out ill; harm; hurt; injury, whether intended or not; ill consequence.