Definition of top secret
1 : protected by a high degree of secrecy a top secret weapon a top secret meeting
2a : containing or being information whose unauthorized disclosure could result in exceptionally grave danger to the nation top secret messages — compare confidential, secretb : of or relating to top secret documents a top secret clearance
Examples of top secret in a sentence
The mission is top secret.
First Known Use of top secret
TOP SECRET Defined for English Language Learners
Definition of top secret for English Language Learners
: kept completely secret by high government officials
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