This is the 4078th most frequent Korean word.
자랐다
"Grew" (past tense of "grow").
The word '자랐다' in this context refers to the process of growing in height or size, used for a plant or tree.
나무가 높이 자랐다.
The tree grew tall.
Here, '자랐다' expresses the rapid growth or physical and perhaps emotional development of the children.
아이들이 빠르게 자랐다.
The children grew quickly.
The word '자랐다' here means 'grew up,' referring to the past maturation or developmental stage of a person's life.