Where does “इसपर” come from?

इसपर (Hindi) comes from Hindi इस, from Prakrit 𑀅𑀲𑁆𑀲, from Sanskrit अश्व, from Proto-Indo-Aryan Háśwas, from Proto-Indo-Iranian Háćwas, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.

Ancestry of “इसपर”, step by step

इसपर traces back through two separate lines of ancestry.

via Hindi इस

StepLanguageWordMeaning
1Hindiइसthis - oblique case only, see below for direct;...
2Prakrit𑀅𑀲𑁆𑀲of this
3Sanskritअश्वhorse, stallion; knight; the number "seven"
4Proto-Indo-AryanHáśwas—
5Proto-Indo-IranianHáćwashorse
6Proto-Indo-Europeanh₁éḱwosstallion, horse
7Proto-Indo-Europeanh₁oh₁ḱu-swift

via Hindi पर

StepLanguageWordMeaning
1Hindiपरon; at; but, however
2Sauraseni Prakrit𑀧𑀭𑀁—
3Sanskritपरम्after, but; ultimate
4Sanskritपरother; more remote; distant, further, other
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European h₁oh₁ḱu- →Every word from Proto-Indo-European h₁éḱwos →Every word from Proto-Indo-Iranian Háćwas →