Where does “выкание” come from?

выкание (Russian) comes from Russian выкать, from Russian вы, from Old Church Slavonic вꙑ, from Proto-Slavic vy, from Proto-Indo-European wōs.

выкание (Russian): addressing someone using the formal form of address

Definitions

  1. addressing someone using the formal form of address

Ancestry of “выкание”, step by step

StepLanguageWordMeaning
1Russianвыкатьto use the formal form of address, to be on...
2Russianвыyou
3Old Church Slavonicвꙑyou
4Proto-Slavicvyyou, ye; you
5Proto-Indo-Europeanwōs—
Every word from Proto-Indo-European wōs →Every word from Proto-Slavic vy →Every word from Old Church Slavonic вꙑ →