безполезен meaning in English

bootless▼(unavailing)
adjective
[UK: ˈbuːt.lɪs] [US: ˈbuːt.lɪs]

feckless▼(without skill, ineffective)
adjective
[UK: ˈfe.klɪs] [US: ˈfe.kləs]

fruitless▼(unproductive; useless)
adjective
[UK: ˈfruːt.ləs] [US: ˈfruːt.ləs]

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

idle [idler, idlest]▼(of no importance, worthless, useless)
adjective
[UK: ˈaɪd.l̩] [US: ˈaɪd.l̩]

inefficient▼(not efficient; not producing the effect intended or desired)
adjective
[UK: ˌɪ.nɪ.ˈfɪʃnt] [US: ˌɪ.nə.ˈfɪ.ʃənt]

nugatory▼(ineffective, invalid)
adjective
[UK: ˈnjuː.ɡə.tə.ri] [US: ˈnjuː.ɡə.tə.ri]

otiose▼(resulting in no effect)
adjective
[UK: ˈəʊ.ʃɪəʊs] [US: ˈoʊ.ʃɪoʊs]

unavailing▼(fruitless, futile, useless)
adjective
[UK: ˌʌ.nə.ˈveɪl.ɪŋ] [US: ˌʌ.nə.ˈveɪl.ɪŋ]

useless▼(without use or possibility to be used)
adjective
[UK: ˈjuː.sləs] [US: ˈjuː.sləs]

vain [vainer, vainest]▼(pointless, futile)
adjective
[UK: veɪn] [US: ˈveɪn]