Translation guide
The English word "intercourse" has two main meanings: sexual intercourse and social interaction. This guide focuses on natural Japanese expressions for each, with emphasis on common usage and register.
To refer to the physical act of sex, in various registers from clinical to slang.
The standard, clinical term for sexual intercourse. Used in formal, medical, or educational contexts.
Sexual intercourse should not be performed without contraception.
The most common everyday word for sex. Neutral in tone, widely understood.
They talk openly about sex.
A slightly more formal term than セックス, often used in legal or educational contexts. Literally 'sexual act'.
Consent for sexual activity is important.
A casual, euphemistic way to say 'have sex'. Derived from the letter 'H'. Common in informal conversation.
I had sex with my girlfriend yesterday.
A literary or poetic term for sexual union. Rare in modern speech.
The two had a deep union.
To refer to communication, dealings, or social exchange between people or groups.
The most common word for social or cultural exchange, interaction. Used for people, groups, nations.
International exchange is important.
Refers to social association, company, or dating relationships. Often used for personal relationships.
A common, slightly casual term for socializing, keeping company, or obligatory social obligations.
Can mean social intercourse or traffic. Somewhat formal and less common for social interaction.
The English phrase 'social intercourse' is somewhat dated. In Japanese, do not directly translate 'intercourse' as 性交 in social contexts. Use 交流 or 交際 instead.
Social interaction
交流 is broad exchange (cultural, international). 交際 often implies personal relationships or dating. 付き合い is casual socializing or obligatory social duties.
Deepen interaction with local residents.
彼とは長い交際がある。
I have a long association with him.
I have a romantic partner.
Go out drinking as part of work socializing.
両家の往来が続いている。
The two families continue to visit each other.
Ask someone out
Neighborly relations