How to say "hidden" in Japanese

• 隠れかくれ
  noun (prefix), nounThe 'crypto-' sense: a modifier for a person or thing concealed or not publicly acknowledged, as with a hidden identity. Not the usual way to say something is simply out of sight.
  このような名詞句めいしくを隠かくれ疑問文ぎもんぶん（concealed　question）といいます。↗

  This type of noun phrase is called a "concealed question".
• 非表示ひひょうじ
  prenominal modifier, nounThe technical sense: hidden meaning not displayed, as when files, rows, or other items on a screen are kept from view. It does not cover physical or emotional hiding.
• 隠然いんぜん
  taru-adjective, adverb (with と)Hidden in the 'behind the scenes' sense: describes power, influence, or activity that works out of sight while remaining real — a latent force — rather than objects physically concealed.
• 人知れぬひとしれぬ
  pre-noun adjectivalHidden in the sense of unknown to other people: private, inward things — feelings, worries, efforts — kept from others' eyes. Not the word for physical concealment or technical display settings.

Use 非表示 for the technical 'not displayed' sense, 隠然 for behind-the-scenes power or influence, 「人知れぬ」 for what is unknown to others such as private feelings, and 「隠れ」 for the 'crypto-' sense of concealed or unacknowledged.

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

• 隠れかくれhidden
• 非表示ひひょうじhidden
• 隠然いんぜんlatent
• 人知れぬひとしれぬsecret