거 아닐까

could it be that...

→ 것
phrase Rare #25,156
could it be that... Used to speculate or ask uncertainly whether something is the case. 거 is a conversational form of 것, and 아닐까 literally means “wouldn't it be?” It often corresponds to “isn't it...?” or “maybe...” depending on context.
KO: 저 사람이 우리 선생님인 거 아닐까?
EN: Could that person be our teacher?

부끄러운 거 아닐까?

Wouldn't that be embarrassing?

— 크레이지 리치 아시안 (2018)

차 안에서 찍은 거 아닐까

Maybe it was taken inside a car.

— 히든 (2005)

수상해 사랑에 빠진 거 아닐까?

I wonder if he's in love?

— 아멜리에 (2001)