Mis″chie‐vous (mĭs″chē̍‐vŭs), a. Causing mischief; harmful; hurtful; — now often applied where the evil is done carelessly or in sport; as, a mischievous child. “Most mischievous foul sin.” Shak.
This false, wily, doubling disposition is intolerably mischievous to society. South.
Syn. — Harmful; hurtful; detrimental; noxious; pernicious; destructive.
— Mis″chie‐vous‐ly, adv. — Mis″chie‐vous‐ness, n.