unsuccessful

US /ˌʌn.səkˈses.fəl/
UK /ˌʌn.səkˈses.fəl/
"unsuccessful" picture
1.

失敗した, 不成功の

not achieving the desired aim or result

:
Their attempts to reach an agreement were unsuccessful.
合意に達するための彼らの試みは失敗に終わった
The rescue mission was largely unsuccessful due to bad weather.
悪天候のため、救助活動はほとんど失敗に終わった