Where does “以後” come from?

以後 (Japanese) comes from Japanese 後, from Japanese 跡, from Japanese 足, from Old Japanese 足.

以後 (Japanese): from now on; from... on

Definitions

  1. from now on; from... on

Ancestry of “以後”, step by step

以後 traces back through two separate lines of ancestry.

via Japanese 後

StepLanguageWordMeaning
1Japanese後the back, the rear, behind; later, afterwards,...
2Japanese跡a track or trace; evidence of something moving,...
3Japanese足foot; 脚 leg
4Old Japanese足—

via Japanese 以

StepLanguageWordMeaning
1Japanese以from and; by, with, by means of
2Middle Chinese以—
Every word from Old Japanese 足 →Every word from Japanese 足 →Every word from Japanese 跡 →