Where does “酸い” come from?

酸い (Japanese) comes from Japanese 酢, from Middle Chinese す.

酸い (Japanese): vinegary, sour

Definitions

  1. vinegary, sour

Ancestry of “酸い”, step by step

StepLanguageWordMeaning
1Japanese酢vinegar
2Middle Chineseす—
Every word from Middle Chinese す →Every word from Japanese 酢 →