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raucous (adj.)

"hoarse, harsh or croaking in sound," 1769, with -ous + Latin raucus "hoarse" (also source of French rauque, Spanish ronco, Italian rauco), from or related to ravus "hoarse," from Proto-Italic *rawo-, from PIE echoic base *reu- "to roar, make hoarse cries" (source also of Sanskrit rayati "barks," ravati "roars;" Greek oryesthai "to howl, roar;" Latin racco "a roar;" Old Church Slavonic rjevo "I roar;" Lithuanian rėkti "roar;" Old English rarian "to wail, bellow"). Middle English had rauc in the same sense, from Old French rauque and directly from Latin raucus.

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Definitions of raucous from WordNet

raucous (adj.)
unpleasantly loud and harsh;
Synonyms: strident
raucous (adj.)
disturbing the public peace; loud and rough;
a raucous party
Synonyms: rowdy
From wordnet.princeton.edu