極秘(ごくひ)

ごくひ
na-adjective
top secret, strictly confidential
formalcommunication
1. top secret, strictly confidential
The highest level of secrecy. Used for information, documents, plans, or projects that must not be disclosed under any circumstances. Stronger than 秘密 (secret).
この情報(じょうほう)は極秘(ごくひ)だ。
This information is top secret.
極秘(ごくひ)の会議(かいぎ)が行(おこな)われた。
A top-secret meeting was held.
新製品(しんせいひん)の開発(かいはつ)は極秘(ごくひ)のプロジェクトとして進(すす)められていた。
The development of the new product was being carried out as a top-secret project.

Forms

  • Modifier: 極秘(ごくひ)の + noun (top-secret ~)
  • Predicate: 極秘(ごくひ)だ
  • Adverbial: 極秘(ごくひ)に / 極秘(ごくひ)で (in secret, confidentially)

Etymology

極(ごく) (extreme, utmost) + 秘(ひ) (secret). Literally "extremely secret."

Usage

Often used as a noun modifier with の: 極秘(ごくひ)の書類(しょるい) (top-secret documents). Also appears as a stamp or label on documents: 極秘(ごくひ) (CONFIDENTIAL / TOP SECRET). Frequently used in business, government, and military contexts.

Common collocations

Similar words

Related Words

Synonym: 秘密(ひみつ) (secret (everyday))
Synonym: 機密(きみつ) (classified (official))
Compare: 内密(ないみつ) (confidential)
Related: 守秘(しゅひ) (confidentiality)
Compare: 社外秘(しゃがいひ) (confidential)
Compare: 社内(しゃない)秘(ひ) (confidential (within a company))
Compare: 内部情報(ないぶじょうほう) (internal information)
general
Added 2026.2.23 21:16 · Revised 2026.9.2 13:01
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