機密|きみつkimitsu[0]heiban (flat)

1. nounsecrecy; highly classified information
   あそこの会社かいしゃから技術ぎじゅつ情報じょうほうをもらうには、まず機密保持契約きみつほじけいやくを結むすばなければいけない。↗

   To get technical information from that company, we first have to sign a non-disclosure agreement.

• Synonym内密ないみつWrittenWritten style; keeping something private or confidential. 「機密」 points to important state or corporate secrets, as in 「軍事機密」.
• Synonym秘密ひみつNeutralNeutral and the broadest word for a secret; 「機密」 is limited to important secrets at the organizational level.
• Related機密性きみつせいFormalFormal term for the confidentiality of information, i.e. how secret it is; 「機密」 is the classified matter itself.
• Related秘ひWrittenWritten single character for a secret or mystery, as in 「マル秘」; 「機密」 centers on organizational secrets.
• Antonym公開こうかいNeutralNeutral; making something available to the public, the opposite of 「機密」, which is kept secret.
• Antonym公表こうひょうWrittenWritten style; an official announcement or public statement, standing opposite to 「機密」.

Use 「機密」 for important state or corporate secrets, as in 「機密情報」 and 「企業機密」. For secrets in general pick 「秘密」, for private confidentiality 「内密」; 「公開」 and 「公表」 are the opposites, making things public.

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

1. 国家こっかや企業きぎょうなどの組織そしきにおいて、特とくに秘密ひみつにしなければならない重要じゅうようなことがら。