Translation guide
How to express 'private matter' in Japanese, from personal affairs to confidential topics.
Referring to something that is personal and not for public discussion.
A natural, common way to say 'a personal matter' or 'something personal'. Used in everyday conversation.
それは個人的なことなので、話したくありません。
That's a private matter, so I don't want to talk about it.
A more formal or written term for 'private matter' or 'personal affairs'. Often used in official contexts.
私事で恐縮ですが、来月結婚します。
I apologize for bringing up a private matter, but I'm getting married next month.
Using the loanword 'private', this is common in casual speech. Slightly more modern feel.
プライベートなことには触れないでください。
Please don't touch on private matters.
Something that should not be disclosed to others, often in business or legal contexts.
Means 'secret' or 'confidential'. Often used when asking someone to keep quiet about something.
これは内緒の話だけど、彼は辞めるらしいよ。
This is a private matter, but I heard he's quitting.
General word for 'secret'. Can be used for private matters that are intentionally hidden.
Formal term for 'confidential matter', used in legal, governmental, or corporate settings.
Referring to issues within the family that are not to be shared outside.
Literally 'family circumstances', used to politely decline to discuss private family matters.
家庭の事情で、今日は早退します。
Due to a private family matter, I'm leaving early today.
A more casual way to refer to family reasons, often used when changing plans.
家の都合で引っ越すことになりました。
Due to private family matters, we've decided to move.
Distinguishing between public/official duties and personal business.
Means 'personal use' or 'private business', often contrasted with work-related matters.
勤務中に私用の電話は控えてください。
Please refrain from personal calls during work hours.
A slightly more formal way to say 'personal errand' or 'private matter'.
私的な用事で明日は休みます。
I'll be off tomorrow for a private matter.
The direct translation 'プライベートマター' is not commonly used in natural Japanese. Use the phrases above instead.
個人的なことです。
It's a private matter.
It's a confidential company matter.
この書類は機密事項を含みます。
This document contains confidential matters.