top secret


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, secret
b : of or relating to top secret documents a top secret clearance

Examples of top secret in a Sentence

The mission is top secret.
Recent Examples on the Web Did you guys have to do any Game of Thrones–level, top secret practices to keep the big twist under wraps? Erica Gonzales, Harper's BAZAAR, 8 July 2021 Parisian makeup artist Violette's top secret for how to apply foundation? Lauren Valent, Vogue, 6 July 2021 Plot details remain top secret, and Feige hasn't specified which actors will return, but Daniel Kaluuya, Danai Gurira, Lupita Nyong'o, Letitia Wright, Angela Bassett, Winston Duke, and Florence Kasumba are all expected to appear in the film. Jason Lamphier,, 30 June 2021 Afterward, the top secret file is found to be related to a biology laboratory in Shanghai, which Leon and the other three agents decide to investigate for clues. Erik Kain, Forbes, 19 May 2021 Missions in remote areas were kept off the books or hidden behind top secret classifications. Jessica Donati, WSJ, 22 June 2021 With the shoot in its early days and details surrounding the film kept top secret, Page is careful to avoid spoilers when talking about joining the cast, alongside Chris Pine, Michelle Rodriguez, Hugh Grant and Justice Smith. NBC News, 27 May 2021 Tudor is the first brand to introduce the metal into the watch industry, and although the precise alloy formula is top secret, Tudor says it has been rendered hard enough for daily wear, and made tarnish free. Carol Besler, Forbes, 18 May 2021 Some of the tributes to the five honorees — performed by a roster of A-list artists that remains top secret — will be filmed individually without audiences. Peggy Mcglone, Washington Post, 13 May 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'top secret.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of top secret

1944, in the meaning defined at sense 1

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Time Traveler for top secret

Time Traveler

The first known use of top secret was in 1944

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Dictionary Entries Near top secret

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Last Updated

19 Jul 2021

Cite this Entry

“Top secret.” Dictionary, Merriam-Webster, Accessed 28 Jul. 2021.

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top secret


English Language Learners Definition of top secret

: kept completely secret by high government officials

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