Definitions of mischievous

1. Mischievousness.

2. Mischievously.

3. deliberately causing harm or damage; " mischievous rumors and falsehoods"

4. Injurious.

5. Causing mischief; harmful; hurtful; - now often applied where the evil is done carelessly or in sport; as, a mischievous child.

6. Causing mischief: injurious: prone to mischief.

7. Injurious; prone to mischief.

8. Inclined to mischief.

9. Making mischief; inclined to mischief.