Where does “-ra” come from?
-ra (Irish) comes from Old Irish -rad, from Proto-Celtic *-retom, from Proto-Indo-European Hret- — to roll; wheel; to run, roll.
-ra (Irish): -ry, -y
Ancestry of “-ra”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Irish | -rad | Forms collective nouns from nouns or adjectives |
| 2 | Proto-Celtic | *-retom | — |
| 3 | Proto-Indo-European | Hret- | to roll; wheel; to run, roll |