IPA: /ˈrɛvələ/
KK: /ˈrɛvələr/
A person who enjoys lively festivities and celebrations, often participating in parties or social gatherings.
The streets were filled with revellers celebrating the festival with music and dancing.
Reveller → It is formed from "re-" (meaning again) and "velle" (from Latin, meaning to wish or to be willing). The word describes someone who wishes to enjoy themselves again, typically in a festive or merry manner.
Think of someone who wants to enjoy themselves 'again' ('re-') and is 'willing' ('velle') to celebrate — that's what a reveller does.