The Collaborative International Dictionary of English v.0.48:

Roguery \Rogu"er*y\, n.
   1. The life of a vargant. [Obs.]
      [1913 Webster]

   2. The practices of a rogue; knavish tricks; cheating; fraud;
      dishonest practices.
      [1913 Webster]

            'Tis no scandal grown,
            For debt and roguery to quit the town. --Dryden.
      [1913 Webster]

   3. Arch tricks; mischievousness.
      [1913 Webster]

WordNet (r) 3.0 (2006):

roguery
    n 1: reckless or malicious behavior that causes discomfort or
         annoyance in others [syn: mischief, mischief-making,
         mischievousness, deviltry, devilry, devilment,
         rascality, roguery, roguishness, shenanigan]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "roguery":
   baseness, chicanery, degradation, devilishness, devilment, devilry,
   deviltry, elfishness, foolishness, high spirits, impishness,
   knavery, knavishness, mischief, mischievousness, moral turpitude,
   playfulness, prankishness, pranksomeness, puckishness, rascality,
   rascalry, reprobacy, roguishness, scampishness, scoundrelism,
   sportiveness, turpitude, vileness, villainousness, villainy,
   waggery, waggishness, youthful spirits