Mis"chie*vous*ness

from The Collaborative International Dictionary of English v.0.48
Mischievous \Mis"chie*vous\ (m[i^]s"ch[-e]*v[u^]s), 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.
   [1913 Webster]

         This false, wily, doubling disposition is intolerably
         mischievous to society.                  --South.
   [1913 Webster]

   Syn: Harmful; hurtful; detrimental; noxious; pernicious;
        destructive.
        [1913 Webster] -- {Mis"chie*vous*ly}, adv. --
        {Mis"chie*vous*ness}, n.
        [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
29 Moby Thesaurus words for "mischievousness":
      annoying, belie, color, devilment, devilry, deviltry, diablerie,
      distort, evil, falsify, garble, harm, hurt, impishness, injury,
      mischief, miscolor, misstate, odiousness, offensiveness, pervert,
      roguery, roguishness, sportiveness, teasing, twist, waggery,
      waggishness, warp

    

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