Translation guide
In Japanese, expressing 'anonymous report' depends on the context: whether it's a tip-off to authorities, a whistleblower report, a news source, or a general anonymous submission. The most common and natural expressions vary by situation.
An anonymous tip or report given to authorities or news outlets, often about a crime or scandal.
There was an anonymous report to the police.
The incident came to light through an anonymous tip.
More formal, often used for providing information to authorities or in official contexts. 情報提供 (jōhō teikyō) means 'information provision'.
We accept anonymous reports (information).
Slangy, often used for juicy tips to media or police. タレコミ (tarekomi) implies leaking inside information.
Apparently there was an anonymous tip-off to the weekly magazine.
An anonymous report made within an organization to expose wrongdoing, often through a formal system.
Specifically refers to an internal whistleblower report. 内部通報 (naibu tsūhō) is the standard term for whistleblowing within a company or organization.
We introduced an anonymous whistleblowing system.
The misconduct came to light through an anonymous internal report.
Stronger term implying accusation or exposure of wrongdoing. 告発 (kokuhatsu) can mean 'indictment' or 'accusation', often used in legal or serious contexts.
Information provided to journalists by an unnamed source.
A report, comment, or piece of content submitted without revealing identity, such as in surveys, contests, or online.
General term for anonymous posting or submission, especially online or in writing. 投稿 (tōkō) means 'contribution/submission'.
There was an anonymous post on the bulletin board.
Anonymous submissions are possible for the survey.
A more direct translation, but can sound stiff. 報告 (hōkoku) means 'report'. Use in formal contexts like business or official reports.
Simply saying 「匿名のレポート」 (tokumei no repōto) is not natural for most contexts. It sounds like a school report or document that happens to be anonymous, not a tip-off or whistleblower report. Use the context-appropriate phrases above.
The word 匿名 (tokumei) can be attached directly to many nouns to mean 'anonymous X', e.g., 匿名希望 (tokumei kibō, 'wishing to remain anonymous'), 匿名組合 (tokumei kumiai, 'anonymous partnership'). However, for 'report', the phrase 匿名の〜 is more common.
An anonymous letter of accusation was sent to the media.
There was an anonymous leak from a senior government official.
An anonymous report was submitted.