raucous /ˈɹɔːkəs/ adjective3 •Harsh and rough-sounding.At night, raucous ruckus took place in the swamp. •Loud and annoying.The new neighbors had a raucous ruction in the small hours last night. •Disorderly and boisterous.Acts of vandalism were committed by a raucous gang of drunkards. formsmore raucous · most raucous