The Collaborative International Dictionary of English v.0.48:
Raucous \Rau"cous\ (r[add]"k[u^]s), a. [L. raucus.] Hoarse; harsh; rough; as, a raucous, thick tone. "His voice slightly raucous." --Aytoun. -- Rau"cous*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
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, raucously]