futile

futile adjective uk/ˈfjuːtaɪl/ us/ˈfjuːtəl/
certain not to have a successful effect or result

бесполезный, тщетный
a futile attempt to escape futility noun [ U ] uk/fjuːˈtɪləti/ us
the state of being futile

бесполезность, тщетность