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).
The document is designated as a state secret.
You must not leak company secrets to outsiders.
The details of that research are kept classified.
Employees have a duty to protect the company's confidential information.
The nation's classified information leaked to a foreign country.
He was fired for leaking the company's classified information.
This document is treated as classified.
極秘 emphasizes an extreme, top-secret level of confidentiality, whereas 機密 is the broader term for classified information in general.
内密 refers to keeping something quietly private between a few people, while 機密 refers to formally classified organizational or state secrets.
公開 means making information public, the direct opposite of 機密, which means keeping information classified.
気密 (same reading きみつ) means airtight or hermetically sealed, a completely different meaning from 機密, which means classified/secret information.
confidentiality
secret funds; confidential expenses
state secrets; national secrets
top secret
confidential matters; classified information
security; data protection; confidentiality protection
confidential information
classified document; confidential document
Compound of 機 (mechanism; opportunity; secret) and 密 (dense; secret). The exact historical derivation is uncertain, but the combination conveys the idea of tightly guarded information.
classified document; confidential document
leak of confidential information; leak of official secrets