Where does “по-ихнему” come from?

по-ихнему (Russian) comes from Russian и́хний, from Russian их, from Proto-Slavic jь, from Proto-Balto-Slavic iś, from Old Polish ić, from Proto-Slavic jьti, from Proto-Balto-Slavic eitei, from Proto-Indo-European h₁éyti — to go.

по-ихнему (Russian): into their language

Definitions

  1. into their language

Ancestry of “по-ихнему”, step by step

по-ихнему traces back through two separate lines of ancestry.

via Russian и́хний

StepLanguageWordMeaning
1Russianи́хнийtheir, theirs
2Russianихtheir
3Proto-Slavicjьthis; he
4Proto-Balto-Slaviciśthis
5Old Polishićto go
6Proto-Slavicjьtito go
7Proto-Balto-Slaviceiteito go
8Proto-Indo-Europeanh₁éytito go, to be going
9Proto-Indo-Europeanh₁ey-to go

via Russian ПО

StepLanguageWordMeaning
1RussianПОsoftware
2Old East Slavicпоon, along, by
3Proto-Slavicpoafter; by; at
4Proto-Indo-Europeanh₂póoff, away
5Proto-Indo-Europeanh₂epofrom, off, back; off, away; off, from
Every word from Proto-Indo-European h₁ey- →Every word from Proto-Indo-European h₁éyti →Every word from Proto-Balto-Slavic eitei →
по-ихнему — Etymology, Origin & Word History | Etymology Explorer