Source : Webster's Revised Unabridged Dictionary (1913)

Raucous \Rau"cous\, a. [L. raucus.]
   Hoarse; harsh; rough; as, a raucous, thick tone. ``His voice
   slightly raucous.'' --Aytoun. -- {Rau"cous*ly}, adv.

Source : WordNet®

raucously
     adv 1: with a raucous sound; "his voice rang raucously"
     2: in a rowdy manner; "the crowd got drunk and started to
        behave rowdily" [syn: {rowdily}]