ras·cal 
(răskəl)
(răskəl)n.
1. One that is playfully mischievous.
2. An unscrupulous, dishonest person; a scoundrel.
adj.
Archaic
Archaic
Made up of, belonging to, or relating to the lower classes: "Nor shall the Rascal Rabble here have Peace" (John Dryden).
[Middle English rascaile, rabble, commoners, from Old French rascaille, probably from rasque, mud, from Vulgar Latin *rāsicāre, to scrape; see RASH2.]
rascal·ly adj.