# top secret

> English word · Adjective

## Definitions
1. Information classified at one of the highest levels of sensitivity by a government, based on an assessment that it would cause exceptionally grave damage to national security if disclosed.
2. A level of security clearance needed to access such information.
3. Pertaining to any especially sensitive closed-room activities.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/top-secret