寝室(しんしつ)

寝室(しんしつ) is a somewhat formal word for bedroom, composed of 寝(しん) (sleep) + 室(しつ) (room). In everyday conversation, ベッドルーム or simply 部屋(へや) is more common.

Forms

The 室(しつ) suffix appears in many room names: 浴室(よくしつ) (bathroom), 教室(きょうしつ) (classroom), 会議室(かいぎしつ) (meeting room).

Related rooms

• 居間(いま): living room
• 和室(わしつ): Japanese-style room
• 洋室(ようしつ): Western-style room
• 子供(こども)部屋(へや): children's room

Usage

Used in real estate listings (e.g., 3LDK = 3 bedrooms + living/dining/kitchen), architecture, and formal descriptions. In casual speech, people more often say 部屋(へや) or ベッドルーム.