Where does “不同” come from?

不同 (Japanese) comes from Japanese 同, from Middle Chinese 同.

不同 (Japanese): difference, irregularity, inequality

Definitions

  1. difference, irregularity, inequality

Ancestry of “不同”, step by step

不同 traces back through two separate lines of ancestry.

via Japanese 同

StepLanguageWordMeaning
1Japanese同same
2Middle Chinese同—

via Japanese 不

StepLanguageWordMeaning
1Japanese不un-, non-, in-; bad, poor
2Middle Chinese不—
Every word from Middle Chinese 同 →Every word from Japanese 同 →
不同 — Etymology, Origin & Word History | Etymology Explorer