Translation guide
A person with whom one has a casual sexual relationship without romantic commitment. In Japanese, this concept is expressed through slang terms, loanwords, or descriptive phrases, as there is no single direct equivalent.
Referring to a person you have sex with regularly but are not in a romantic relationship with.
Abbreviation of セックスフレンド (sex friend). Very common slang among younger people. Implies a regular, casual sexual relationship without romantic involvement.
Do not translate 'hookup buddy' literally as 接続仲間 or similar. It will not be understood. Use the slang terms or descriptive phrases provided.
Terms like セフレ are very casual and may be inappropriate in formal settings. In more polite conversation, you can describe the relationship as 体だけの関係 or simply explain that you are not in a committed relationship.
彼はただのセフレだよ。
He's just a hookup buddy.
He said he wants a hookup buddy.
The full form of セフレ. Slightly more explicit and less slangy, but still casual.
We have a hookup buddy relationship.
Literally 'a body-only relationship'. A descriptive phrase that emphasizes the purely physical nature of the arrangement.
I have a purely physical relationship with that person.
Another abbreviation of セックスフレンド, less common than セフレ.
I'm looking for a hookup buddy.