은 아니죠

isn't ... / is not ... (right?)

→ 은
phrase Rare #18,463
isn't ... / is not ... (right?) A polite, soft way to say that something is not the case, often while seeking agreement. 은 marks the topic or contrast, and 아니죠 is a polite form of 아니지요.
KO: 최선의 대책은 아니죠.
EN: It isn't the best solution, right?

아직은 아니죠

Not yet.

— 오펜하이머 (2023)

전남편은 아니죠

He's not your ex-husband, right?

— 영원 (2025)

아직은 아니죠.

Not yet.

— 위키드: 포 굿 (2025)

, 아주 틀린 말은 아니죠

Well, it’s not entirely wrong.

— TAR 타르 (2022)