безсилен означава в английски

flaccid▼(lacking energy or vigor)
adjective
[UK: ˈflæk.sɪd] [US: ˈflæk.səd]

forceless▼(Without force)
adjective
[UK: ˈfɔː.slɪs] [US: ˈfɔː.slɪs]

helpless▼(unable to defend oneself, see also: defenseless)
adjective
[UK: ˈhel.pləs] [US: ˈhel.pləs]

impotent▼(lacking physical strength or vigor; weak)
adjective
[UK: ˈɪm.pə.tənt] [US: ˈɪm.pə.tənt]

infirm▼(weak; feeble)
adjective
[UK: ɪn.ˈfɜːm] [US: ˌɪn.ˈfɝːm]

powerless▼(lacking sufficient power or strength)
adjective
[UK: ˈpaʊə.lɪs] [US: ˈpaʊər.ləs]