때문입니다

because of

→ 때문
phrase Uncommon #15,166
because of Used after a noun to explain the reason for something; 때문에입니다 means “it is because of.” It can also follow a clause to mean “because.”
KO: 늦은 건 교통 체증 때문입니다.
EN: I'm late because of traffic.

두려움 때문 입니다

It's because of fear.

— 세 얼간이 (2009)

문니 때문 입니다

It's because of the door.

— 카쉬미르의 소녀 (2015)

네, 일 때문 입니다

Yes, it’s because of work.

— 달콤한 인생 (1960)