unpremeditated(performed, but not planned or thought out in advance; extemporaneous, but not unintentional) adjective [UK: ˌʌn.priː.ˈme.dɪ.teɪ.tɪd] [US: ˌʌn.priː.ˈme.dɪ.teɪ.tɪd]
непредумишлено убийство noun {n}
manslaughter [manslaughters](act of killing unlawfully) noun [UK: ˈmæn.slɔː.tə(r)] [US: ˈmæns.ˌlɒ.tər]