Mis"chie*vous (mĭs"chē*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.