IPA: /ˈrɛvələ/
KK: /ˈrɛvələr/
A person who enjoys celebrating or partying, often in a lively and noisy way.
The revelers danced and sang all night at the festival.
Reveler → It is formed from "revel" (from Old French *reveiller*, meaning to wake up or rouse) and "-er" (meaning a person who). A reveler is a person who wakes up to enjoy festivities or celebrations.
Think of someone who 'wakes up' to enjoy a party or celebration — that's what a reveler does.