Where does “足湯” come from?

足湯 (Japanese) comes from Japanese 湯, from Old Japanese ゆ, from Proto-Japonic *yu — hot water.

足湯 (Japanese): a heated footbath, either as an appliance for one person, or as a communal amenity

Definitions

  1. a heated footbath, either as an appliance for one person, or as a communal amenity

Ancestry of “足湯”, step by step

足湯 traces back through two separate lines of ancestry.

via Japanese 湯

StepLanguageWordMeaning
1Japanese湯warm or hot water; bathwater; a hot spring
2Old Japaneseゆattaches to the
3Proto-Japonic*yuhot water

via Japanese 足

StepLanguageWordMeaning
1Japanese足foot; 脚 leg
2Old Japanese足—

Words derived from “足湯”

Every word from Proto-Japonic *yu →Every word from Old Japanese ゆ →Every word from Japanese 湯 →