Where does “féinaithne” come from?
féinaithne (Irish) comes from Irish féin-, from Irish féin, from Old Irish féin, from Proto-Celtic *swesin, from Proto-Indo-European swé — self.
féinaithne (Irish): self-knowledge
Ancestry of “féinaithne”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Irish | féin- | self-, auto- |
| 2 | Irish | féin | self; own; even, only |
| 3 | Old Irish | féin | self; one's own |
| 4 | Proto-Celtic | *swesin | — |
| 5 | Proto-Indo-European | swé | self |