feckless
🇺🇸
/ˈfekləs/
🇬🇧
/ˈfekləs/
adjective
R
not strong or effective; lacking in responsibility
Because of his feckless behavior, he failed to complete any of his projects on time.
彼の無責任な行動のため、時間通りにどのプロジェクトも完了できなかった。
translation
無責任な