몰랐거든요

didn't know

→ 모르다
verb · formal, past tense Rare #27,811
didn't know The ending -거든요 presents this as an explanation or background information; it often has the feel of “you see.”
KO: 저는 그 사실을 몰랐거든요.
EN: I didn't know that.
Conjugation of 모르다

마드리드에도 있는지 몰랐거든요

I didn't know they had one in Madrid too.

— 신경쇠약 직전의 여자 (1988)

저는 진짜 아무것도 몰랐거든요

I really had no idea.

— Tune in for Love (2019)