아들일

will be a son

→ 아들

phrase Rare #28,402

will be a son Formed from 아들 (“son”) and 이다 (“to be”); it usually appears before endings such as 거야 or 줄 알았어.

KO: 그 아이는 제 아들일 거예요.

EN: That child will be my son.

I thought it would be a boy.

— 양철북 (1979)

This one is definitely going to be a boy...

— 노 머시: 90분 (2026)

It will be a son.

— 영원 (2025)