密室 みっしつ locked room #7,091 Meanings noun locked room secret room Its kanji 密 ミツ · ひそ.か secrecy, density (pop), minuteness, carefulness 室 シツ · むろ room, apartment, chamber, greenhouse, cellar In sentences Furigana 会議かいぎは密室みっしつで行おこなわれた。 The meeting was held behind closed doors. #11870712