Where does “空梅雨” come from?

空梅雨 (Japanese) comes from Japanese 空, from Middle Chinese 空.

空梅雨 (Japanese): dry rainy season

Definitions

  1. dry rainy season

Ancestry of “空梅雨”, step by step

空梅雨 traces back through two separate lines of ancestry.

via Japanese 空

StepLanguageWordMeaning
1Japanese空the sky; something empty; ineffectual
2Middle Chinese空—

via Japanese 梅雨

StepLanguageWordMeaning
1Japanese梅雨the East Asian rainy season
2Middle Chineseはいう'—
Every word from Middle Chinese 空 →Every word from Japanese 空 →