Translation guide
The English verb 'install' covers several distinct actions in Japanese. The most common equivalents are 設置する (set up equipment/facilities) and インストールする (install software/apps). Other meanings like 'install a person in a position' or 'install oneself comfortably' require different expressions.
To set up or put in place a device, machine, or system for use (e.g., air conditioner, security camera, kitchen).
The most common and neutral term for installing equipment, devices, or facilities. Used in both formal and everyday contexts.
エアコンを設置する。
Install an air conditioner.
We installed security cameras.
Emphasizes attaching or mounting something onto a surface or structure. Common for shelves, hooks, car parts, etc.
壁に棚を取り付ける。
Install a shelf on the wall.
カーナビを取り付けてもらった。
I had a car navigation system installed.
Used for installing large, heavy, or permanent fixtures like bathtubs, machinery, or industrial equipment. Implies a fixed, stable placement.
新しい浴槽を据え付ける。
Install a new bathtub.
To download and set up a program or application on a computer or device.
The standard loanword for installing software. Universally understood.
新しいアプリをインストールする。
Install a new app.
パソコンにソフトをインストールした。
I installed the software on my computer.
A more formal term often used in business or IT contexts when introducing a new system or software across an organization.
新しい会計システムを導入する。
Install a new accounting system.
To formally place someone in an official role, often with a ceremony.
To appoint or install someone in a position. The causative form of 就任する (to assume a post).
彼を新社長に就任させる。
Install him as the new president.
To appoint or designate someone to a role. More common than 就任させる in everyday business contexts.
彼女を部長に任命した。
We installed her as department head. (appointed)
To settle into a place in a relaxed or comfortable way.
Literally 'settle one's hips', meaning to make oneself comfortable and stay for a while.
ソファに腰を落ち着けて本を読んだ。
I installed myself on the sofa and read a book.
To settle down or calm down. Can be used when someone finally relaxes in a place.
インストールする is only for software. Using it for physical installation (like an air conditioner) sounds unnatural. Use 設置する or 取り付ける instead.
エアコンをインストールする
install an air conditioner (unnatural)
彼はようやく新しい家に落ち着いた。
He finally installed himself in his new home.