동생도

younger sibling too

→ 동생
phrase Rare #20,226
younger sibling too 동생 refers to a younger sibling, regardless of gender; 도 means “too” or “also.”
KO: 동생도 같이 갈 거예요.
EN: My younger sibling will go too.

언니 동생도 너무한다

Sis, even your little sibling thinks you’re being too much.

— 귀향 (2006)

동생도 다쳤어요

My younger sibling got hurt too.

— 아바타: 물의 길 (2022)