Where does “วัยชรา” come from?
วัยชรา (Thai) comes from Thai วัย, from Pali vaya, from Sanskrit वयस्, from Proto-Indo-Iranian *wáyHas.
วัยชรา (Thai): old age
Ancestry of “วัยชรา”, step by step
วัยชรา traces back through two separate lines of ancestry.
via Thai วัย
| Step | Language | Word | Meaning |
|---|
| 1 | Thai | วัย | years (of person's age) |
| 2 | Pali | vaya | — |
| 3 | Sanskrit | वयस् | age |
| 4 | Proto-Indo-Iranian | *wáyHas | — |
via Thai ชรา
| Step | Language | Word | Meaning |
|---|
| 1 | Thai | ชรา | old; aged |
| 2 | Pali | jarā | old age; decrepitude; decay |
| 3 | Sanskrit | जरा | old age |
| 4 | Proto-Indo-European | ǵerh₂- | to grow old, to mature |