безуспешен angolul

futile▼(incapable of producing results)
adjective
[UK: ˈfjuː.taɪl] [US: ˈfjuː.təl]

luckless▼(unsuccessful in a failing manner)
adjective
[UK: ˈlʌ.kləs] [US: ˈlʌ.kləs]