실패한

In a sentence

• 저는 실패한 프로젝트를 다시 시작하기로 했습니다.

  I decided to restart the failed project.

  Here, '실패한' is used as a modifier for '프로젝트,' indicating that the project being referred to did not succeed.

• 그의 실패한 계획들은 모두 교훈이 되었다.

  His failed plans all became lessons.

  In this sentence, '실패한' describes '계획들,' explaining that the plans were unsuccessful.

• 우리는 실패한 시도에서 배워야 합니다.

  We must learn from our failed attempts.

  '실패한' here modifies '시도,' signifying that the attempts mentioned did not achieve their goals.