Where does “小雨” come from?

小雨 (Japanese) comes from Japanese 小, from Old Japanese ささ.

小雨 (Japanese): light rain, drizzle

Definitions

  1. light rain, drizzle

Ancestry of “小雨”, step by step

小雨 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesesmallness; small size, small; Short for 小の月;...
2Old Japaneseささ

via Japanese

StepLanguageWordMeaning
1Japaneserain, rainfall; a rainy weather; something...
2Middle Chinese
Every word from Old Japanese ささEvery word from Japanese