덕질 /deok-jil/
Fandom activities / Stan life
The act of diving deep into a fandom hobby — collecting merch, following an idol, watching fan content, etc. From 덕후 (otaku) + 질 (act of doing).
Examples
요즘 K-pop 덕질에 빠졌어
I've been deep into K-pop fan activities lately
덕질하느라 돈 다 썼어
I spent all my money on fan stuff