Where does “連日” come from?

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

連日 (Japanese): day after day, successive days

Definitions

  1. day after day, successive days

Ancestry of “連日”, step by step

連日 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 連

StepLanguageWordMeaning
1Japanese連take along, lead, join, connect; linking,...
2Middle Chinese連—
Every word from Proto-Japonic *pi →Every word from Old Japanese 日 →Every word from Japanese 日 →