Source : Webster's Revised Unabridged Dictionary (1913)

Hyperbolically \Hy`per*bol"ic*al*ly\, adv.
   1. (Math.) In the form of an hyperbola.

   2. (Rhet.) With exaggeration; in a manner to express more or
      less than the truth. --Sir W. Raleigh.

Source : WordNet®

hyperbolically
     adv : in an exaggerated manner [syn: {exaggeratedly}]