Translation guide
The English word "erect" can refer to a physical posture (standing upright), the act of building or raising something, or a physiological state. This guide covers natural Japanese expressions for each meaning.
Describing a person, animal, or body part that is standing straight up or held upright.
Means 'to stand upright' or 'to stand erect'. Used for people, animals, or objects in a vertical position.
彼は背筋を伸ばして直立していた。
He stood erect with his back straight.
Referring to the act of erecting a building, monument, or structure.
The most common verb for 'to build' or 'to erect' a building or structure.
Referring to the erect state of the penis or clitoris.
The standard medical/formal term for 'to have an erection'. Used for both penis and clitoris.
性的興奮によりペニスが勃起する。
The penis becomes erect due to sexual arousal.
When describing a person standing upright, do not directly translate 'erect' as 勃起する (bokki suru), as this exclusively means physiological erection and will cause confusion or embarrassment.
Literally 'to stretch the back muscles'. Describes holding oneself erect, often with good posture.
背筋を伸ばして座りなさい。
Sit up straight (with your back erect).
A more casual way to say 'stand up straight' or 'stand erect'.
真っ直ぐ立ってください。
Please stand erect.
新しいビルを建てる計画がある。
There is a plan to erect a new building.
Used specifically for erecting temples, shrines, or statues. More formal and often implies a ceremonial or commemorative act.
地元の人々が寺院を建立した。
The local people erected a temple.
Means 'to set up' or 'to install'. Can be used for erecting equipment, monuments, or temporary structures.
公園に銅像が設置された。
A bronze statue was erected in the park.
A common colloquial euphemism meaning 'to stand', used for erection. Often used in casual conversation.
朝起きたら立ってた。
When I woke up, it was erect.
Slang term for erection, using a different kanji for 'stand'. Very informal.
Considered vulgar; avoid in polite conversation.
あのAV男優はすぐ勃つらしい。
That porn actor apparently gets erect quickly.