Where does “tusa” come from?
tusa (Irish) comes from Old Irish tussu, from Old Irish tú, from Proto-Celtic tū, from Proto-Indo-European túh₂ — you, thou.
tusa (Irish): emphatic form of tú
Ancestry of “tusa”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Irish | tussu | you , thou |
| 2 | Old Irish | tú | you , thou |
| 3 | Proto-Celtic | tū | you , thou |
| 4 | Proto-Indo-European | túh₂ | you, thou |