Where does “大事に” come from?

大事に (Japanese) comes from Japanese に, from Old Japanese に.

大事に (Japanese): care deeply about, treat well

Definitions

  1. care deeply about, treat well

Ancestry of “大事に”, step by step

大事に traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneseparticle for indirect objects; to; particle for...
2Old Japanese

via Japanese 大事

StepLanguageWordMeaning
1Japanese大事An important thing; a serious matter; a valuable...
Every word from Old Japanese Every word from Japanese