Grammar
-아/어 보이다
look / seem
Form
Adjective stem + -아/어 보이다 — “look”, “seem”.
Function
Describes the visible impression of a state, not a certainty about its reality.
Why this form?
-는 것 같다 — “seems that”: a broader inference not necessarily based on visible appearance.
Forms not to confuse
-는 것 같다
그는 피곤한 것 같아요. — He seems tired.
Examples
다른 한 사람은 그보다 조금 더 어려 보인다. — The other one looks a little younger than him.
오늘은 기분이 좋아 보여요. — You look happy today.