Source : Webster's Revised Unabridged Dictionary (1913)

Rascality \Ras*cal`i*ty\, n.; pl. {Rascalities}
   1. The quality or state of being rascally, or a rascal; mean
      trickishness or dishonesty; base fraud.

   2. The poorer and lower classes of people. [Obs.]

            The chief heads of their clans with their several
            rascalities                           --T. Jackson.