as in confidential
kept completely hidden from the public by high government officials
top secret documents The mission is top secret.
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Example Sentences
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Recent Examples of top secret
The Soviet Union tested more than 450 bombs at its Semipalatinsk test site in Kazakhstan from 1949 to 1989, in top secret towns, built for nuclear testing.
—
Issy Ronald, CNN Money, 24 Aug. 2025
His role at the institute was far from top secret, but it had been treated as highly sensitive and confidential.
—Avi Asher-Schapiro, ProPublica, 22 Aug. 2025
Prosecutors said Lee, who has a top secret security clearance, sent technical information on the M1A2 Abrams tank and offered his assistance to the Russian Federation in an exchange online in May.
—Alexander Mallin, ABC News, 7 Aug. 2025
These operations would be authorized by DOE in locations outside the confines of DOE national laboratories (where current experiments are taking place in sites operating under U.S. government top secret protocols).
—Noël Fletcher, Forbes.com, 29 July 2025
See All Example Sentences for top secret
Issy Ronald, CNN Money, 24 Aug. 2025
His role at the institute was far from top secret, but it had been treated as highly sensitive and confidential.
—Avi Asher-Schapiro, ProPublica, 22 Aug. 2025
Prosecutors said Lee, who has a top secret security clearance, sent technical information on the M1A2 Abrams tank and offered his assistance to the Russian Federation in an exchange online in May.
—Alexander Mallin, ABC News, 7 Aug. 2025
These operations would be authorized by DOE in locations outside the confines of DOE national laboratories (where current experiments are taking place in sites operating under U.S. government top secret protocols).
—Noël Fletcher, Forbes.com, 29 July 2025
See All Example Sentences for top secret
Recent Examples of Synonyms for top secret
Adjective
-
State and federal law include strict privacy protections that keep people’s personal data confidential and keep everyone safe from identity theft.—
Todd Spangler,
Freep.com,
25 Sep. 2025
-
All calls are toll-free and confidential.—
Christine Pelisek,
PEOPLE,
24 Sep. 2025
Adjective
-
When services were finished the defendant followed the priest into a restricted area, Manley said.—
City News Service,
Oc Register,
26 Sep. 2025
-
Earlier this year, a food delivery driver made his way into a restricted area at Chicago's O’Hare International Airport.—
Colson Thayer,
PEOPLE,
25 Sep. 2025
Adjective
-
His response to the Kimmel suspension reflected solidarity within the late-night community and personal concern over the implications for creative freedom.—
Hollie Silverman,
MSNBC Newsweek,
24 Sep. 2025
-
Working fluidly between portraiture, fine art, fashion, and documentary, I’ve always been drawn to using image-making to amplify and humanise deeply personal stories.—
Caterina De Biasio,
Vogue,
24 Sep. 2025
Adjective
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Lindsey Halligan, who is currently working in the White House staff secretary's office, represented Trump for a time during the classified documents investigation.—
Katherine Faulders,
ABC News,
20 Sep. 2025
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SpaceX additionally benefits from billions of dollars in contracts from NASA and the Department of Defense by providing launch services for classified satellites and other payloads.—
Eric Lagatta,
AZCentral.com,
20 Sep. 2025
Adjective
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Of those, four are standalone structures on the water and share a private dock with individual slips for boats 31-feet long.—
Sandra Barrera,
Oc Register,
27 Sep. 2025
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All applicants must be over 18 and able to attend an in-person intensive from May 27th to June 1st, 2026, at a private resort in Lake Arrowhead, California.—
Matt Grobar,
Deadline,
26 Sep. 2025
Adjective
-
While crypto trading has a steep learning curve, anyone with a wallet can start trading predictions without any esoteric expertise.—
Atharva Gosavi,
Interesting Engineering,
17 Sep. 2025
-
Unfortunately, tenure, even in the best schools, gets rewarded to professors who write articles filled with complex math or esoteric theories in sociology and psychology.—
Shivaram Rajgopal,
Forbes.com,
6 Sep. 2025
Cite this Entry
“Top secret.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/top%20secret. Accessed 29 Sep. 2025.
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