Where does “問うに落ちず語るに落ちる” come from?

問うに落ちず語るに落ちる (Japanese) comes from Japanese に, from Old Japanese に.

問うに落ちず語るに落ちる (Japanese): to keep a secret when asked about it, but let it slip inadvertently when chatting on another occasion

Definitions

  1. to keep a secret when asked about it, but let it slip inadvertently when chatting on another occasion

Ancestry of “問うに落ちず語るに落ちる”, step by step

問うに落ちず語るに落ちる traces back through 3 separate lines of ancestry.

via Japanese

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

via Japanese 落ちる

StepLanguageWordMeaning
1Japanese落ちるto fall; to go down; to trip
2Old Japanese落つto fall

via Japanese 問う

StepLanguageWordMeaning
1Japanese問うto ask; to inquire
Every word from Old Japanese Every word from Japanese
問うに落ちず語るに落ちる — Etymology, Origin & Word History | Etymology Explorer