Where does “roga” come from?
roga (Middle Irish) comes from Old Irish rogu, from Celtic *ɸro-gusom, from Proto-Celtic ɸro-, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.
Ancestry of “roga”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Irish | rogu | — |
| 2 | Celtic | *ɸro-gusom | — |
| 3 | Proto-Celtic | ɸro- | before, in front of; in addition; to completion |
| 4 | Proto-Indo-European | per- | before, in front; first; to go through |
| 5 | Proto-Indo-European | pr̥tós | passed , crossed |