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Definition of Top secret
1. Adjective. (military) Information classified at the highest level of sensitivity by a government, based on an assessment that it would cause exceptionally grave damage to national security if disclosed. ¹
2. Adjective. A level of security clearance needed to access such information. ¹
3. Adjective. (figuratively) Pertaining to any especially sensitive closed-room activities. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Top Secret
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