어딘데요

where is it?

→ 어디+인데+요
어딘데 Where is it? + 요 Polite speech
pronoun · formal Rare #29,869
where is it? Polite conversational form; the subject is understood from context.
KO: 그 가게는 어딘데요?
EN: Where is that store?

이 집이 어딘데요?

Where is this house?

— The Chaser (2008)

거기가 어딘데요?

Where is that place?

— 귀시 (2025)

그럼 어딘데요?

Then where is it?

— 헤어질 결심 (2022)

어딘데요?

Where is it?

— 드라이브 (2011)