Source : Webster's Revised Unabridged Dictionary (1913)

Aristocratic \Ar`is*to*crat"ic\, Aristocratical
\Ar`is*to*crat"ic*al\, a. [Gr. ?: cf. F. aristocratique.]
   1. Of or pertaining to an aristocracy; consisting in, or
      favoring, a government of nobles, or principal men; as, an
      aristocratic constitution.

   2. Partaking of aristocracy; befitting aristocracy;
      characteristic of, or originating with, the aristocracy;
      as, an aristocratic measure; aristocratic pride or
      manners. -- {Ar`is*to*crat"ic*al*ly}, adv. --
      {Ar`is*to*crat"ic*al*ness}, n.

Source : WordNet®

aristocratically
     adv : in an aristocratic manner; "they behaved aristocratically"