Translation guide
A diner is a type of casual restaurant, often with a counter and booths, serving simple American-style food. In Japanese, there is no exact equivalent, so the concept is usually expressed by describing the style or using loanwords.
To refer to a diner as a type of restaurant, typically with a retro or American feel, serving burgers, sandwiches, and breakfast all day.
The direct loanword for 'diner'. It is understood by many Japanese people, especially in urban areas, and is used in restaurant names. However, it may not be universally recognized, so adding a brief explanation can help.
To refer to a customer dining in a restaurant. This meaning is rare and mostly literary or formal.
Literally 'meal guest/customer'. It is a formal term used in restaurant reviews or reports. Not used in everyday conversation.
そのレストランは食事客で賑わっていた。
The restaurant was bustling with diners.
If you need to explain what a diner is, you can say: 「アメリカによくある、カウンターとボックス席があって、ハンバーガーやパンケーキを出すカジュアルなレストランだよ」 (It's a casual restaurant common in America, with a counter and booths, serving things like hamburgers and pancakes).
That diner has delicious hamburgers.
駅前に新しいダイナーができた。
A new diner opened in front of the station.
Specifies 'American diner', which clarifies the style and is more easily understood. Commonly used in Japanese to describe diner-themed restaurants.
このアメリカンダイナーは24時間営業だ。
This American diner is open 24 hours.
Means 'old-fashioned diner/eatery'. This describes a casual, often retro-style restaurant that serves simple Japanese or Western dishes. It captures the nostalgic feel of a classic diner but is culturally Japanese.
この街には昔ながらの食堂がまだ残っている。
There are still old-fashioned diners left in this town.
Short for 'family restaurant'. While not exactly a diner, it is a common type of casual restaurant in Japan that serves a variety of Western and Japanese dishes. It lacks the retro counter culture but is functionally similar.
夜遅くまでやっているファミレスは便利だ。
Family restaurants that are open late are convenient.
General word for 'customer' or 'guest'. In context, it can mean 'diner', but it is not specific to eating.
あの店はいつも客が多い。
That place always has a lot of diners/customers.