fantastically

from WordNet (r) 3.0 (2006)

fantastically
    adv 1: exceedingly; extremely; "she plays fabulously well" [syn:
           {fabulously}, {fantastically}, {incredibly}]

from The Collaborative International Dictionary of English v.0.48

Fantastically \Fan*tas"tic*al*ly\, adv.
   In a fantastic manner.
   [1913 Webster]

         the letter A, in scarlet, fantastically embroidered
         with gold thread, upon her bosom.        --Hawthorne.
   [1913 Webster]