Where does “aisghníomhaíocht” come from?
aisghníomhaíocht (Irish) comes from Irish ais-, from Irish áis, from Old Irish ais, from Proto-Celtic *axsi-, from Proto-Celtic *axsilā, from Proto-Indo-European h₂eḱs-, from Proto-Indo-European h₂eǵ- — to drive.
aisghníomhaíocht (Irish): retroactivity
Ancestry of “aisghníomhaíocht”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Irish | ais- | re-, back |
| 2 | Irish | áis | convenience |
| 3 | Old Irish | ais | back |
| 4 | Proto-Celtic | *axsi- | — |
| 5 | Proto-Celtic | *axsilā | — |
| 6 | Proto-Indo-European | h₂eḱs- | axis, axle |
| 7 | Proto-Indo-European | h₂eǵ- | to drive |