This is the 5081st most frequent Korean word.
나섰던
"Had stepped forward" or "had taken action."
Here, '나섰던' ('stepped up') emphasizes assuming responsibility or positioning oneself to lead or initiate a new task.
그녀는 새로운 프로젝트를 시작하기 위해 앞에 나섰던 용감한 팀장이었다.
She was the brave team leader who stepped up to start a new project.
In this case, '나섰던' ('intervened') is utilized to describe someone stepping in to mediate or resolve a conflict.
아이들은 놀이터에서 다툼을 멈추게 하기 위해 담임 선생님이 나섰던 순간을 기억했다.
The children remembered the moment when their homeroom teacher intervened to stop a quarrel at the playground.
In this sentence, '나섰던' ('stepped forward') refers to taking the initiative or showing active involvement in addressing a difficult task. It highlights proactive behavior.