寝耳に水 ねみみにみず Meanings Expression, Noun bolt from the blue; great surprise Kanji 寝 sleep. Read as ねる. 耳 ear. Read as みみ. 水 water. Read as みず. Example sentences その知らせは全く寝耳に水だった。The news hit me like a bolt from the blue. そのニュースは全く寝耳に水だ。It's news to me. Word lists Idioms Jinuma: Japanese Dictionary · Word lists