Where does “*tonn” come from?
*tonn (Proto-Brythonic) comes from Proto-Celtic tundā, from Proto-Indo-European (s)tewd-, from Proto-Indo-European stew- — to praise, laud.
Ancestry of “*tonn”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Celtic | tundā | wave, billow |
| 2 | Proto-Indo-European | (s)tewd- | to push, to hit |
| 3 | Proto-Indo-European | stew- | to praise, laud |