Where does “bấy lâu” come from?

bấy lâu (Vietnamese) comes from Vietnamese bày, from Proto-Vietic pər, from Persian پر, from Middle Persian purr, from Proto-Iranian pr̥Hnáh, from Proto-Indo-Iranian pr̥Hnás, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

bấy lâu (Vietnamese): for so long; from long ago

Definitions

  1. for so long; from long ago

Ancestry of “bấy lâu”, step by step

bấy lâu traces back through two separate lines of ancestry.

via Vietnamese bày

StepLanguageWordMeaning
1Vietnamesebàyto arrange; to dispose; to display
2Proto-Vieticpərto fly
3Persianپرfull; feather; wing
4Middle Persianpurr—
5Proto-Iranianpr̥Hnáhfull, filled
6Proto-Indo-Iranianpr̥Hnásfull, filled
7Proto-Indo-Europeanpl̥h₁nósfull
8Proto-Indo-Europeanpleh₁-to fill

via Vietnamese lâu

StepLanguageWordMeaning
1Vietnameselâulong
2Proto-Mon-Khmerləwʔ—
Every word from Proto-Indo-European pleh₁- →Every word from Proto-Indo-European pl̥h₁nós →Every word from Proto-Indo-Iranian pr̥Hnás →