scalawag

from WordNet (r) 3.0 (2006)

scalawag
    n 1: a white Southerner who supported Reconstruction policies
         after the American Civil War (usually for self-interest)
         [syn: {scalawag}, {scallywag}]
    2: a deceitful and unreliable scoundrel [syn: {rogue}, {knave},
       {rascal}, {rapscallion}, {scalawag}, {scallywag}, {varlet}]
    3: one who is playfully mischievous [syn: {imp}, {scamp},
       {monkey}, {rascal}, {rapscallion}, {scalawag}, {scallywag}]

from The Collaborative International Dictionary of English v.0.48

Scalawag \Scal"a*wag\, n.
   A scamp; a scapegrace. [Spelt also {scallawag}.] [Slang,
   U.S.] --Bartlett.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

32 Moby Thesaurus words for "scalawag":
      balker, balky horse, blackguard, crock, crowbait, devil, dog,
      enfant terrible, garron, goat, hack, jade, jughead, knave, limb,
      mischief, nag, plug, precious rascal, rapscallion, rascal, roarer,
      rogue, rosinante, scamp, scoundrel, shyster, sneak, spalpeen,
      stiff, villain, whistler

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