Where does “उनसे” come from?

उनसे (Hindi) comes from Hindi से, from Sanskrit समम्, from Sanskrit सम, from Proto-Indo-Iranian samHás, from Proto-Indo-European somHós, from Proto-Indo-European sem- — together, one.

Ancestry of “उनसे”, step by step

उनसे traces back through two separate lines of ancestry.

via Hindi से

StepLanguageWordMeaning
1Hindiसेindicates association or mutual dealing;...
2Sanskritसमम्
3Sanskritसमsame, equal, alike; equivalent to, like,...
4Proto-Indo-IraniansamHássame, equal
5Proto-Indo-EuropeansomHóssame, alike
6Proto-Indo-Europeansem-together, one

via Hindi उन

StepLanguageWordMeaning
1Hindiउनthose; him; her
Every word from Proto-Indo-European sem-Every word from Proto-Indo-European somHósEvery word from Proto-Indo-Iranian samHás