철들지말자 (cheol-deulji-malja) is a heartfelt promise that translates to "Let's not grow up" or "Let's not mature."
The base verb, 철들다 (cheol-deulda), means to become sensible or mature, often implying a loss of youthful passion. In "ENCORE," GOT7 looks back on a promise they made to each other to never lose that initial spark. It's a powerful declaration of their enduring bond and a desire to hold onto their shared dreams despite the passing of time.
Imagine the stage lights flickering out, the crowd still buzzing, and then… GOT7 comes racing back shouting “Encore!” That single word is the heartbeat of this song. "ENCORE" is a love letter to their fans, a promise that even though time is speeding by and everyone is supposed to be all grown-up now, the boys still treasure the wide-eyed excitement of their first days together. They reminisce about awkward laughs, clumsy moves, and the electric blue sky of their early years, calling those memories the greatest gifts they ever received.
At its core, the track says: We are not finished. No matter how dark the night gets or how long the journey feels, GOT7 will keep stepping back onto the stage, singing just for the people who have stood by them. It is an anthem of gratitude, nostalgia, and unbreakable promise, wrapped in the universal thrill of hearing your favorite group return for one more song.