Source : Webster's Revised Unabridged Dictionary (1913)

Sacrilegious \Sac`ri*le"gious\, a. [From sacrilege: cf. L.
   sacrilegus.]
   Violating sacred things; polluted with sacrilege; involving
   sacrilege; profane; impious.

         Above the reach of sacrilegious hands.   --Pope.
   -- {Sac`ri*le"gious*ly}, adv. -- {Sac`ri*le"gious*ness}, n.

Source : WordNet®

sacrilegiously
     adv : in a sacrilegious manner