IPA: //ˈrɔː.kəs.li//
KK: /ˈrɔːkəsli/
In a way that is loud and harsh, often causing disturbance or annoyance.
The crowd cheered raucously during the concert, making it hard to hear the music.
Raucously → It is formed from "raucus" (from Latin "raucus", meaning hoarse or harsh) and the suffix "-ly" (meaning in a manner of). The word "raucously" describes an action done in a hoarse or harsh manner.
Think of the word 'raucus' which means harsh or hoarse, and remember that 'raucously' describes doing something in a harsh or loud way.