This is the 6432nd most frequent Korean word.
어렸을
A conjugated form of "어리다," meaning "when (I/you/someone) was young."
Here, '어렸을' is used to describe a time period 'when I was young', indicating the speaker's youth in the past.
나는 어렸을 때 그림을 많이 그렸어요.
I used to draw a lot when I was young.
In this sentence, '어렸을 적부터' relates to the time 'since he was young', marking the initiation of a liking for sports during youth.
그는 어렸을 적부터 운동을 좋아했어요.
He has liked sports since he was young.
Here, '어렸을 때부터' specifies the time frame 'since she was young', identifying the start time for acting activities.