Where does “братоубийство” come from?

братоубийство (Bulgarian) comes from Russian уби́йство, from Bulgarian -ство, from Old Church Slavonic -ьство, from Proto-Slavic -ьstvo, from Proto-Balto-Slavic -istwas.

братоубийство (Bulgarian): fratricide killing of one's brother

Definitions

  1. fratricide killing of one's brother

Ancestry of “братоубийство”, step by step

братоубийство traces back through two separate lines of ancestry.

via Russian уби́йство

StepLanguageWordMeaning
1Russianуби́йствоmurder, homicide
2Bulgarian-ство—
3Old Church Slavonic-ьствоforms abstract or collective nouns
4Proto-Slavic-ьstvoDeadjectival, forming nouns denoting a condition...
5Proto-Balto-Slavic-istwas—

via Bulgarian брат

StepLanguageWordMeaning
1Bulgarianбратbrother
2Proto-Slavicbratrъbrother
3Proto-Balto-Slavicbrā́ˀtēbrother
4Proto-Indo-Europeanbʰréh₂tērbrother
Every word from Proto-Balto-Slavic -istwas →Every word from Proto-Slavic -ьstvo →Every word from Bulgarian -ство →