MISCHIEVOUS

adj. 1 naughty, impish, roguish, rascally, devilish, elfish or elvish, puckish, scampish, frolicsome, playful, sportive Tying his cousin's shoelaces together was a mischievous prank and not malicious 2 harmful, injurious, hurtful, damaging, pernicious, detrimental, destructive, deleterious, dangerous, spiteful, malicious, vicious, malign, baleful, baneful, noxious, wicked, evil, bad The government regards as mischievous the detention of any Foreign Office personnel