Source : WordNet®

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