것에

to/in something

→ 것
phrase Common #5,011
to/in something 것 means “thing” and 에 is a particle meaning “to,” “in,” or “at.” Together, 것에 often refers to an action, situation, or thing as the object of verbs such as 관심이 있다 (to be interested in), 책임이 있다 (to be responsible for), and 감사하다 (to be grateful for).
KO: 새로운 것을 배우는 것에 관심이 있어요.
EN: I’m interested in learning new things.

것에 푹 빠져 있었다.

Tom was completely absorbed in it.