Where does “สี่สิบ” come from?

สี่สิบ (Thai) comes from Thai สี่, from Proto-Tai siːᴮ, from Middle Chinese 四, from Proto-Sino-Tibetan *pV-lij — four.

สี่สิบ (Thai): 40

Definitions

  1. 40

Ancestry of “สี่สิบ”, step by step

สี่สิบ traces back through two separate lines of ancestry.

via Thai สี่

StepLanguageWordMeaning
1Thaiสี่4; four
2Proto-Taisiːᴮfour
3Middle Chinese四—
4Proto-Sino-Tibetan*pV-lijfour

via Thai สิบ

StepLanguageWordMeaning
1Thaiสิบ10; ten

Words derived from “สี่สิบ”

Every word from Proto-Sino-Tibetan *pV-lij →Every word from Middle Chinese 四 →Every word from Proto-Tai siːᴮ →