그건 중요하지 않아

that isn't important

→ 그것+은
phrase Rare #20,107
that isn't important Casual, informal way to say that something is not important.
KO: 그건 중요하지 않아. 걱정하지 마.
EN: That isn't important. Don't worry.

그건 중요하지 않아!

That doesn't matter!

— 후 엠 아이 (2014)

그건 중요하지 않아.

That doesn't matter.

— 극장판 귀멸의 칼날: 무한성편 (2025)

그건 중요하지 않아

That doesn't matter.

— 엠 (1931)