односторонний bedeutet auf Englisch

one-sided▼(partial or biased in favour of one faction)
adjective
[UK: ˌwʌn.ˈsaɪd.ɪd] [US: ˌwʌn.ˈsaɪd.ɪd]

one-way▼(allowing movement in only one direction)
adjective
[UK: ˌwʌn.ˈweɪ] [US: ˌwʌn.ˈweɪ]

unilateral▼(done by one side only)
adjective
[UK: ˌjuː.nɪ.ˈlæ.trəl] [US: ˌjuː.nə.ˈlæ.tə.rəl]