Where does “vierustoveri” come from?

vierustoveri (Finnish) comes from Finnish toveri, from Russian това́рищ, from Old East Slavic товарищь, from Proto-Slavic tovarišь, from Proto-Slavic tovarъ, from Proto-Turkic *tabar — livestock, cattle.

Ancestry of “vierustoveri”, step by step

vierustoveri traces back through two separate lines of ancestry.

via Finnish toveri

StepLanguageWordMeaning
1Finnishtovericomrade; companion, buddy
2Russianтова́рищcomrade
3Old East Slavicтоварищь—
4Proto-Slavictovarišь—
5Proto-Slavictovarъloading
6Proto-Turkic*tabarlivestock, cattle

via Finnish vierus

StepLanguageWordMeaning
1Finnishvierus—
2Finnishvieriside; Third-person singular indicative past form...
3Proto-Finnicveeriside, flank; edge
4Proto-Finno-Permicwäre—
Every word from Proto-Turkic *tabar →Every word from Proto-Slavic tovarъ →Every word from Proto-Slavic tovarišь →