How to say "privacy" in Japanese

Choosing the right word
  • nounThe loanword for privacy itself: use it when you mean privacy as a concept, right, or concern, for instance in talk of protecting personal information or keeping one's data private.
    アメリカ人あめりかじんにとっては、日本にっぽんの赤ん坊あかんぼうはプライバシーがないように見みえる。↗
    To Americans, a Japanese baby seems to have no privacy.
  • 内緒ないしょCommon
    no-adjectiveIt is about keeping something secret from others, often something shared only with a few: it fits 'privacy' in the sense of keeping matters hidden, not privacy as a right or personal space.
    彼女かのじょは内緒ないしょで私にその話はなしをした。↗
    She told me the story in confidence.
  • 内密ないみつCommon
    na-adjective, no-adjectiveSuggests handling a matter discreetly and confidentially so that it does not become known: it suits confidential handling of affairs rather than privacy as a personal right or sphere.
    この情報じょうほうは内密ないみつにしてください。↗
    Keep this information under your hat.
  • 秘密ひみつJLPT N3approx.Common
    na-adjective, no-adjectiveMeans a secret: something kept hidden from others. As a rendering of 'privacy' it is only a loose match, and for privacy as a right it is seldom the word you want.
    私は彼女かのじょに取り入とりいってうまく秘密ひみつを聞き出ききだした。↗
    I charmed a secret out of her.
  • nounCovers one's personal life and private sphere — the side of life kept apart from work or public view. Choose it when 'privacy' means your own personal life rather than the abstract concept.

Use 「プライバシー」 for privacy as a concept or right and 「プライベート」 for one's personal life; 内緒, 内密 and 秘密 are really about keeping things secret, so they fit 'privacy' only in that sense.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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