Where does “do” come from?
do (Scottish Gaelic) comes from Middle Irish ro-, from Old Irish ro-, from Proto-Celtic ɸro-, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.
do (Scottish Gaelic): your; to; for
Ancestry of “do”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Middle Irish | ro- | — |
| 2 | Old Irish | ro- | indicates a perfective aspect; indicates... |
| 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 |