密室 みっしつ Meanings Noun locked room secret room Kanji 密 dense. Read as ミツ. 室 room. Read as シツ. Example sentences 一見したところ、この殺人は密室で起こっている。Apparently, the murder happened in a locked room. 会議は密室で行われた。The meeting was held behind closed doors. Common phrases 完全な密室 Words containing 密室 密室殺人 (みっしつさつじん) locked-room murder (e.g. in murder mystery fiction) 密室の暴力 (みっしつのぼうりょく) violence behind closed doors 密室トリック (みっしつトリック) locked room trick (esp. in mystery fiction) Jinuma: Japanese Dictionary · Word lists