그럴 걸

probably so; probably would do that

→ 그렇다
phrase Rare #24,729
probably so; probably would do that A casual way to express a guess or expectation. In “그럴 걸 그랬다,” it can mean “I should have done that.”
KO: 남자애들도 그럴 걸?
EN: The boys probably do that too, right?

남자애들도 그럴 걸?

Do boys do that too?

— 가장 따뜻한 색, 블루 (2013)

그럴 걸

I guess so.

— 언터처블: 1%의 우정 (2011)