温水 おんすい Meanings Noun, の-adjective warm water Kanji 温 warm. Read as オン. 水 water. Read as スイ. Words containing 温水 温水プール (おんすいプール) heated swimming pool 温水洗浄便座 (おんすいせんじょうべんざ) bidet toilet with a heated water function 太陽熱温水器 (たいようねつおんすいき) solar water-heater And 3 more. Jinuma: Japanese Dictionary · Word lists