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

News of Doria's stay in the United Kingdom comes courtesy of royal commentator Omid Scobie, who recently discussed Meghan's mom's top secret British vacation on Good Morning America. Kayleigh Roberts, Marie Claire, "Doria Ragland Visited Meghan Markle and Prince Harry This Summer," 9 Sep. 2018 In addition to the severity of the danger, the breach is impressive for its logistical complexity, requiring top secret coordination between a Chinese military unit and factories were the chips could be installed. Eric Limer, Popular Mechanics, "Tiny Chinese Microchips Reportedly Found Hidden in Amazon, Apple Servers," 4 Oct. 2018 Details are top secret, but its large wheels tip their hubs to its heavy duty underpinnings. Gary Gastelu, Fox News, "Trump's new 'Beast' limousine spotted roaming New York City," 24 Sep. 2018 Last week, Meghan Markle set off on a top secret, solo trip to Toronto, to spend three days hanging out and catching up with best friend and stylist, Jessica Mulroney—and her flight sounds dreamy. Lucy Wood, Marie Claire, "Meghan Markle Spent Her Solo Flight to Toronto Sipping on Champagne and Watching a Romantic Movie," 3 Sep. 2018 The public continues to pour over every detail of his political aspirations and his top secret wedding to Carolyn Bessette; even his time at Brown is the subject of fascination. Lauren Hubbard, Town & Country, "This Revealing College Photoshoot Shows a Different Side of John F. Kennedy Jr.," 10 Aug. 2018 The downgrading of his interim clearance from top secret to secret was first reported by Politico. Shane Harris, Washington Post, "Kushner’s overseas contacts raise concerns as foreign officials seek leverage," 6 Mar. 2018 The downgrading of his interim clearance from top secret to secret was first reported by Politico. Washington Post,, "Kushner’s overseas contacts raise concerns as foreign officials seek leverage," 28 Feb. 2018 Both have received top secret briefings on the matter. James Hohmann, Washington Post, "The Daily 202: Why Bernie Sanders won’t join the Democratic Party," 7 June 2018

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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Last Updated

14 Dec 2018

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Time Traveler for top secret

The first known use of top secret was in 1944

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More Definitions for top secret

top secret


English Language Learners Definition of top secret

: kept completely secret by high government officials

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