This is the 5084th most frequent Korean word.
나왔던
"That came out" or "that appeared."
Here, '나왔던' is used to describe an actor who appeared in the movie, highlighting a past occurrence.
영화 시간에 나왔던 배우의 연기가 인상적이었어요.
The acting of the actor who appeared during the movie was impressive.
In this sentence, '나왔던' refers to something (a problem) that was present or occurred in the past.
전에 나왔던 문제들 중 하나가 시험에 다시 나왔어요.
One of the problems that appeared before came up again on the test.
'나왔던' is used to talk about an incident that was mentioned or reported in the news previously.