궁금한 건

what I'm curious about

→ 궁금하다
phrase Rare #29,062
what I'm curious about A shortened form of 궁금한 것은; the person who is curious is usually understood from context.
KO: 궁금한 건 왜 늦었냐는 거야.
EN: What I'm curious about is why you were late.

아니, 너희 말고… 내가 궁금한 건 너 야

No, not you guys… I’m curious about you.

— 문라이즈 킹덤 (2012)

아 임마, 뭐 궁금한 건 없나?

Hey, man, don't you have any questions?

— Virgin Stripped Bare by Her Bachelors (2000)

그리고 일도 좋아하고 또 궁금한 건?

And what about things you enjoy or are curious about?

— Kill Boksoon (2023)