The story
- Proto-Indo-European*ḱers-
- Proto-Indo-European*ḱr̥sós?
- Proto-Indo-European*h₁wers-?
- Proto-Indo-European*wers-
- Proto-Indo-European*wérsēn
- Proto-Indo-Iranian*(w)ŕ̥šā
- Proto-Iranian*(w)ŕ̥šāder.?
- Proto-Germanic*hrussą
- Proto-West Germanic*hross
- Old Englishhors
- Middle Englishhors
- Englishhorse
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- English todayhorseless
Etymology from Wiktionary, CC BY-SA 4.0.