Where does “ただで済む” come from?

ただで済む (Japanese) comes from Japanese で, from Japanese ぜ, from Japanese ぞえ, from Japanese え, from Middle Chinese 衣.

ただで済む (Japanese): to get away without consequences, to get off scot-free

Definitions

  1. to get away without consequences, to get off scot-free

Ancestry of “ただで済む”, step by step

ただで済む traces back through 3 separate lines of ancestry.

via Japanese で

StepLanguageWordMeaning
1Japaneseでat; with, by, using; indicating the following...
2Japaneseぜsentence-ending particle signifying emphasis,...
3Japaneseぞえ­ sentence-ending particle signifying emphasis, used to lightly press one's point, with affectionate overtones
4JapaneseえAlternative form of い
5Middle Chinese衣—

via Old Japanese 済む

StepLanguageWordMeaning
1Old Japanese済むto settle, finish

via Japanese ただ

StepLanguageWordMeaning
1Japaneseただordinary, common, nothing special
Every word from Middle Chinese 衣 →Every word from Japanese え →Every word from Japanese ぞえ →