This is the 922nd most frequent Korean word.
이른
"Early."
이른 modifies '아침', indicating an early time of morning.
이른 아침부터 열심히 공부했어요.
I studied diligently from early morning.
이른 is used to describe '시간', indicating that the subject arrived before the expected time.
그는 이른 시간에 도착했습니다.
He arrived at an early time.
이른 describes '봄', specifying an early point in the spring season.