What does "mischievous" mean?

Mischievous: 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. -- Mis"chie*vous*ly, adv. -- Mis"chie*vous*ness, n.

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