[1] : The Collaborative International Dictionary of English v.0.48

scalawag \scal"awag\, n.
   a scamp; a scapegrace. spelt also scallawag. slang,
   u.s. --bartlett.
   1913 webster
see also:
scallawag 

[2] : WordNet (r) 2.0

scalawag
     n 1: white southerner supporting reconstruction policies after
          the civil war usually for self-interest syn: scallywag
     2: a deceitful and unreliable scoundrel syn: rogue, knave,
         rascal, rapscallion, scallywag, varlet
     3: one who is playfully mischievous syn: imp, scamp, monkey,
         rascal, rapscallion, scallywag
see also:
scallywag rogue knave rascal rapscallion varlet 
imp scamp monkey 

[3] : 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

Scalawag >> S Words
Scalawag, definition of term: Scalawag
scalawag_pag1.html