Where does “tair ar ddeg” come from?
tair ar ddeg (Welsh) comes from Welsh ar, from Middle Welsh ar, from Proto-Brythonic ar, from Proto-Celtic aros, from Proto-Indo-European h₂erh₃-o-, from Proto-Indo-European h₂erh₃-, from Proto-Indo-European h₁er- — earth.
Ancestry of “tair ar ddeg”, step by step
tair ar ddeg traces back through 3 separate lines of ancestry.
via Welsh ar
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Welsh | ar | on; about to |
| 2 | Middle Welsh | ar | on, upon; over, of; he/she who, whoever |
| 3 | Proto-Brythonic | ar | in front of; ploughing, ploughed land |
| 4 | Proto-Celtic | aros | ploughing, ploughed land |
| 5 | Proto-Indo-European | h₂erh₃-o- | ploughing |
| 6 | Proto-Indo-European | h₂erh₃- | to plough |
| 7 | Proto-Indo-European | h₁er- | earth |