noun
secrecy; confidentiality; classified information
Refers to official or organizational secrets, especially in government, military, or corporate contexts. Often used in compounds like 機密情報 (classified information) or 機密保持 (maintaining confidentiality).
その文書は国家機密に指定されている。
The document is designated as a state secret.
会社の機密を外部に漏らしてはいけ
You must not leak company secrets to outsiders.