탈덕 /tal-deok/
Leaving a fandom
Quitting being a fan — 탈 (exit) + 덕 (fandom/otaku). The moment you stop being a hardcore fan of an idol or creator. Opposite: 입덕.
Examples
그 아이돌 사건 이후로 탈덕했어
I left the fandom after that incident
탈덕할 뻔했는데 신곡 듣고 다시 빠졌어
Almost left the fandom but the new song pulled me back in