Where does “вслепую” come from?

вслепую (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.

вслепую (Russian): blind, blindly

Definitions

  1. blind, blindly

Ancestry of “вслепую”, step by step

вслепую 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 слепо́й

StepLanguageWordMeaning
1Russianслепо́йblind (unable to see)
2Proto-Slavicslěpъblind
Every word from Proto-Indo-European h₁én →Every word from Proto-Indo-European h₁n̥ →Every word from Proto-Slavic vъ(n) →