Source : Webster's Revised Unabridged Dictionary (1913)

Uproarious \Up*roar"i*ous\, a.
   Making, or accompanied by, uproar, or noise and tumult; as,
   uproarious merriment. -- {Up*roar"i*ous*ly}, adv. --
   {Up*roar"i*ous*ness}, n.

Source : WordNet®

uproariously
     adv : in a hilarious manner; "hilariously funny" [syn: {hilariously}]