This is the 6301st most frequent Korean word.
실패한
"Failed"
Here, '실패한' is used as a modifier for '프로젝트,' indicating that the project being referred to did not succeed.
저는 실패한 프로젝트를 다시 시작하기로 했습니다.
I decided to restart the failed project.
In this sentence, '실패한' describes '계획들,' explaining that the plans were unsuccessful.
그의 실패한 계획들은 모두 교훈이 되었다.
His failed plans all became lessons.
'실패한' here modifies '시도,' signifying that the attempts mentioned did not achieve their goals.