IPA: //ˈhɛdˌlaɪnər//
KK: /ˈhɛdˌlaɪnər/
A person or group that is the main attraction or performer at an event, often receiving the most attention or publicity.
The headliner for the music festival this year is a famous rock band.
Headliner → It is formed from "head" (from Old English "heafod", meaning the top or leader) and "-liner" (a suffix indicating a person or thing associated with a particular role). The word "headliner" refers to a person or act that is the main attraction or featured performer in a show or event.
Think of someone who is the 'top' ('head') performer in a show, and the '-liner' indicates their role as a featured person. This helps you remember that a headliner is the main act.