01 a. Causing mischief; harmful; hurtful; -- now often applied where the evil is done carelessly or in sport; as, a mischievous child.
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1.
Causing mischief; harmful; hurtful; -- now often applied where the evil is done carelessly or in sport; as, a mischievous child.“This false, wily, doubling disposition is intolerably mischievous to society.” — South.
Syn.
Harmful; hurtful; detrimental; noxious; pernicious; destructive.