Translation guide
The term 'back end' can refer to the rear part of something physical, the later part of a period of time, or the server-side of software. This guide covers the most common ways to express these meanings in Japanese.
Referring to the back part of a vehicle, building, line, etc.
General term for the rear part of something, such as a car, building, or room. Neutral and widely used.
Please load the luggage into the back end of the car.
Common word for 'back' or 'behind'. Used in everyday conversation for the back end of something.
I sat in the back end of the bus.
More formal or technical term for 'rear' or 'backward direction'. Often used in written instructions or military contexts.
Please watch the back end.
Referring to the latter half or end of a period, such as a year, month, or event.
Means 'second half' or 'latter part'. Commonly used for time periods like years, months, or events.
A new project will start in the back end of this year.
Means 'end' or 'close'. Can be used for the tail end of a period, but is less specific than 後半.
Refers to the final stage or terminal period, often with a nuance of decline. Used for eras, illnesses, etc.
Referring to the backend of a website, application, or IT infrastructure.
Direct loanword from English, widely understood in IT contexts. Used for both the server-side software and the backend team.
He is in charge of back-end development.
Means 'server-side'. Often used interchangeably with バックエンド, but more specifically emphasizes the server aspect.
Literally 'behind-the-scenes person'. Can be used metaphorically for backend work, but is more about the role than the technology. Casual.
後ろ (うしろ) is only for physical position. To refer to the later part of a time period, use 後半 (こうはん) or 終わり (おわり).
back end of the year
I get busy at the back end of the month.
Many reforms were carried out in the back end of the Edo period.
We need to optimize the back-end processing.
彼はいつも裏方としてシステムを支えている。
He always supports the system as the back-end guy.