Where does “二十日” come from?

二十日 (Japanese) comes from Japanese 日, from Old Japanese 日, from Proto-Japonic *pi — day, sun.

二十日 (Japanese): the twentieth day of the month; twenty days;...

Definitions

  1. the twentieth day of the month; twenty days;...

Ancestry of “二十日”, step by step

二十日 traces back through two separate lines of ancestry.

via Japanese 日

StepLanguageWordMeaning
1Japanese日Sunday
2Old Japanese日the sun; sunlight, sunshine; daytime, daylight
3Proto-Japonic*piday, sun

via Japanese 二十

StepLanguageWordMeaning
1Japanese二十twenty; 20
2Japanese二two, 2; second; two
3Middle Chinese二two

Words derived from “二十日”

Every word from Proto-Japonic *pi →Every word from Old Japanese 日 →Every word from Japanese 日 →