Translation guide
A private detective is a professional hired to investigate matters, often involving surveillance, background checks, or finding missing persons. In Japanese, the most common and natural term is 探偵 (tantei), but other expressions exist depending on context and formality.
The most common, everyday way to refer to a private detective, like those in novels or hired for investigations.
The standard word for a private detective. Used in both professional and casual contexts. Can also refer to detective work in general.
彼は探偵を雇って妻の浮気を調べた。
He hired a private detective to investigate his wife's affair.
探偵事務所を開く。
Open a detective agency.
Literally 'private detective'. More formal and explicit than 探偵 alone. Often used in official contexts or to distinguish from police detectives.
彼は私立探偵として長年働いている。
He has been working as a private detective for many years.
Refers to a private investigation agency, often specializing in background checks, credit investigations, or corporate due diligence. The term can also imply the agency itself rather than the individual detective.
興信所に身元調査を依頼する。
Request a background check from a private investigation agency.
Referring to a private detective in stories, especially hard-boiled or noir genres, often with a specific image.
Still the standard term, but in fiction it often evokes the classic image of a trenchcoat-wearing investigator.
ハードボイルド探偵小説が好きだ。
I like hard-boiled detective novels.
Casual or slangy ways to refer to a private detective, often in conversation or media.
Even in casual speech, 探偵 is perfectly natural. There isn't a common slang abbreviation like 'PI' in English.
探偵に頼もうか？
Should we hire a private detective?
Japanese doesn't have a widely used slang equivalent to 'private eye' or 'PI'. Using 探偵 is always safe and natural.
Avoid trying to directly translate 'PI' or 'private eye' into Japanese; it will sound unnatural.
探偵に頼もうか？
Should we hire a private detective?
The English 'detective' can refer to both police detectives and private detectives. In Japanese, a police detective is 刑事 (けいじ), while a private detective is 探偵 (たんてい). Using 刑事 for a private detective would be incorrect.
探偵 is often used in compounds like 探偵事務所 (detective agency) or 探偵小説 (detective novel). It's very productive.
Used in titles or descriptions to emphasize the 'private' aspect, common in translated works.
名探偵コナンではなく、私立探偵の物語。
Not Detective Conan, but a story about a private detective.