Source : Webster's Revised Unabridged Dictionary (1913)

Exceedingly \Ex*ceed"ing*ly\, adv.
   To a very great degree; beyond what is usual; surpassingly.
   It signifies more than very.

Source : WordNet®

exceedingly
     adv : to an extreme degree or extent; "his eyesight was
           exceedingly defective" [syn: {passing}, {extremely}]