Where does “aontreo” come from?
aontreo (Irish) comes from Irish aon, from Old Irish óen, from Proto-Celtic oinos, from Proto-Indo-European óynos — one; single.
aontreo (Irish): one-way
Ancestry of “aontreo”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Irish | aon | one; any; breast, chimney-piece |
| 2 | Old Irish | óen | one |
| 3 | Proto-Celtic | oinos | one |
| 4 | Proto-Indo-European | óynos | one; single |