Where does “un” come from?
un (Middle Welsh) comes from Proto-Brythonic ʉn, from Proto-Celtic oinos, from Proto-Indo-European óynos — one; single.
un (Middle Welsh): one
Ancestry of “un”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Brythonic | ʉn | one |
| 2 | Proto-Celtic | oinos | one |
| 3 | Proto-Indo-European | óynos | one; single |