Translation guide
In Japanese, describing a 'small room' depends on context: a compact room in a house, a tiny apartment, a private room in a restaurant, or a cramped space. The most common word is 小部屋 (kobeya), but other terms like 狭い部屋 (semai heya) emphasize narrowness, and 個室 (koshitsu) refers to a private room.
Describing a physically small room, such as a bedroom, study, or storage room.
Literally 'small room'. Neutral and widely understood. Can be used for any small room in a house, office, etc.
I use this small room as a study.
子供には小部屋を与えた。
We gave the child a small room.
Emphasizes that the room is narrow or cramped. Often carries a negative nuance of being too small.
狭い (semai) implies narrowness or lack of space, so it can sound complaining if not softened.
狭い部屋ですが、快適です。
It's a small room, but it's comfortable.
Another way to say 'small room', using 小さな (chiisana), which is slightly more descriptive and often used in narratives.
小さな部屋に机が一つあります。
There is one desk in the small room.
Referring to a very small living space, like a studio apartment or a cramped rental unit.
A loanword from English 'one-room', referring to a studio apartment where the living, sleeping, and kitchen areas are in one room (bathroom separate). Very common in real estate.
ワンルームの家賃は安いです。
The rent for a studio apartment is cheap.
Literally 'narrow apartment'. Used to describe a cramped apartment, often with a negative connotation.
学生時代は狭いアパートに住んでいました。
When I was a student, I lived in a small apartment.
A small apartment, but less common than 狭いアパート when emphasizing crampedness. Sounds slightly more neutral.
彼女は小さなアパートで一人暮らしです。
She lives alone in a small apartment.
A small, enclosed room for a group, offering privacy.
A private room, commonly found in restaurants, izakayas, karaoke boxes, etc. It implies a small, enclosed space for a group, not necessarily physically tiny but separated from the main area.
個室を予約しました。
I reserved a private room.
この店には小さな個室があります。
This restaurant has small private rooms.
A raised tatami seating area in a restaurant, often semi-private or separated by screens. Not always a fully enclosed room, but can be a small, intimate space.
Describing a space that feels too small, like a closet, booth, or tiny enclosure.
A narrow or cramped space. Can refer to any confined area, not just a room.
エレベーターは狭い空間です。
An elevator is a small space.
Literally 'small space'. More technical or literary, used in design or architecture contexts.
この小空間を有効活用したい。
I want to make effective use of this small space.
小部屋 (kobeya) is a neutral term for a small room, while 狭い部屋 (semai heya) emphasizes that the room feels cramped or narrow. Use 小部屋 when simply stating the size, and 狭い部屋 when you want to convey a sense of discomfort or lack of space.
小部屋ですが、落ち着きます。
It's a small room, but it's relaxing.
狭い部屋でストレスがたまる。
I get stressed in a cramped room.
小室 (shōshitsu) is a rare and formal term, sometimes used in technical contexts or as a surname. It is not used in everyday conversation to mean 'small room'. Stick to 小部屋 or 狭い部屋.
There is a seat available in the raised tatami area.