안 좋거든

isn't good, you see

→ 안
phrase Rare #26,274
isn't good, you see 거든 adds an explanatory tone, often giving a reason or background information.
KO: 오늘은 컨디션이 안 좋거든.
EN: I’m not feeling well today, you see.

이탈리아 출신 경쟁자 때문에 요새 사정이 안 좋거든

Things haven’t been going well lately because of a competitor from Italy.

— 마농의 샘 2부 (1986)

오빠 기분 안 좋거든

I'm in a bad mood, okay?

— The Chaser (2008)

내 영어 발음이 안 좋거든

My English pronunciation isn't very good.

— 아노라 (2024)

안 좋거든!

It's not good!

— 너의 이름은. (2016)