Where does “ສີ່ສິບ” come from?
ສີ່ສິບ (Lao) comes from Lao ສີ່, from Proto-Tai siːᴮ, from Middle Chinese 四, from Proto-Sino-Tibetan *pV-lij.
ສີ່ສິບ (Lao): forty
Ancestry of “ສີ່ສິບ”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Lao | ສີ່ | four |
| 2 | Proto-Tai | siːᴮ | four |
| 3 | Middle Chinese | 四 | — |
| 4 | Proto-Sino-Tibetan | *pV-lij | — |