Where does “в-четвёртых” come from?

в-четвёртых (Russian) comes from Russian в, from Old East Slavic въ, from Proto-Slavic vъ(n), from Proto-Indo-European h₁n̥, from Proto-Indo-European h₁én — in.

в-четвёртых (Russian): fourthly, in the fourth place

Definitions

  1. fourthly, in the fourth place

Ancestry of “в-четвёртых”, step by step

в-четвёртых traces back through two separate lines of ancestry.

via Russian в

StepLanguageWordMeaning
1Russianвin, at, on; to, into; at, in, on
2Old East Slavicвъinside
3Proto-Slavicvъ(n)in, inside, within; in, into, inside; at
4Proto-Indo-Europeanh₁n̥
5Proto-Indo-Europeanh₁énin

via Russian четвёртый

StepLanguageWordMeaning
1Russianчетвёртыйfourth
2Old East Slavicчетвьртъfourth
3Proto-Slavicčetvьrtъfourth
4Proto-Balto-Slavicketwirtasfourth
5Proto-Indo-European*kʷetwr̥tósfourth
Every word from Proto-Indo-European h₁énEvery word from Proto-Indo-European h₁n̥Every word from Proto-Slavic vъ(n)