How to say "clandestine" in Japanese

Choosing the right word
  • 隠密おんみつCommon
    na-adjective, no-adjectiveCovers 'clandestine' in the sense of covert, deliberately concealed activity — operations, maneuvers, or dealings carried out in secret. A common word that describes the secrecy of the action itself, as in undercover work.
  • 秘密めいたひみつめいた
    prenominal modifierDescribes a secretive, furtive air or manner — behavior that seems mysterious or stealthy — rather than the concealment of an operation itself. For 'clandestine' it suits furtive-looking conduct; it is the less common choice.

Choose 隠密 for clandestine actions or operations deliberately kept secret; choose 「秘密めいた」 for conduct that has a secretive, furtive air, and remember it is the less common choice.

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

Japanese equivalents

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