1
as in clandestine
undertaken or done so as to escape being observed or known by others
an undercover operation to infiltrate the terrorist organization
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
as in spy
a person who tries secretly to obtain information for one country in the territory of another usually unfriendly country
within the city was a well-organized fifth column, and these undercovers would make themselves known as soon as the invading forces breached the city limits
Synonyms & Similar Words
as in underground
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of undercover
Fernando Cervantes Jr., USA TODAY, 20 Mar. 2025
But still to come is Athena's undercover cop mission aboard The Odyssey in the 9-1-1/Doctor Odyssey crossover event, airing on March 20, directly following season 8, episode 11 of the procedural drama.
—Samantha Stutsman, People.com, 20 Mar. 2025
Jessica Radloff, Glamour, 8 Sep. 2023
The documentary is a first time collaboration between ABC News Studios and the Associated Press following a former Army sniper undercover inside the KKK.
—ABC News, 30 Apr. 2023
See All Example Sentences for undercover
Adjective
In the court filing, texts between Eichorn and the undercover agent were shared.
—Fernando Cervantes Jr., USA TODAY, 20 Mar. 2025
But still to come is Athena's undercover cop mission aboard The Odyssey in the 9-1-1/Doctor Odyssey crossover event, airing on March 20, directly following season 8, episode 11 of the procedural drama.
—Samantha Stutsman, People.com, 20 Mar. 2025
Noun
Back at the hospital Jack tells Brady that working undercover took a lot of courage.
—Jessica Radloff, Glamour, 8 Sep. 2023
The documentary is a first time collaboration between ABC News Studios and the Associated Press following a former Army sniper undercover inside the KKK.
—ABC News, 30 Apr. 2023
See All Example Sentences for undercover
Recent Examples of Synonyms for undercover
Adjective
-
Taking over a century-old garden house hidden within Shanghai’s storied alleys, Samuel Gui Yang softly partitioned the space, seducing the audience yet making every one of them a clandestine voyeur.—
Tianwei Zhang,
Footwear News,
1 Apr. 2025
-
In a display of gallows humor at the sloppiness of the leaders’ theoretically clandestine communication, people online quickly turned those symbols into memes, and renamed their own chats Houthi PC small group.—
Kyle Chayka,
The New Yorker,
26 Mar. 2025
Adjective
-
Then Gungnir covert sniper rifle seems like a bargain, relatively speaking, at just $12,867.—
Davey Winder,
Forbes.com,
28 Mar. 2025
-
In the letter, Grassley wrote that the records would help shine a light on the Nazi planning of the covert escape routes.—
Michael Dorgan,
FOXNews.com,
27 Mar. 2025
Noun
-
Chilean writer-director Felipe Gálvez, whose debut feature The Settlers premiered in Cannes in 2023, has set his second feature film as Impunity, a spy thriller set in the late 1990s around the arrest of dictator Augusto Pinochet.—
Diana Lodderhose,
Deadline,
1 Apr. 2025
-
Elon Musk visited the CIA headquarters on Monday for talks on government efficiency, the spy agency director of public affairs Liz Lyons told Axios.—
Barak Ravid,
Axios,
1 Apr. 2025
Adverb
-
Mines were buried underground for concealment, unless the minefield was laid in a hurry when might be simply placed on the surface.—
David Hambling,
Forbes.com,
3 Apr. 2025
-
The team of Egyptian and American archaeologists found the tomb, which the researchers estimate is 3,600 years old, nearly 23 feet underground at Abydos, one of the oldest cities of ancient Egypt.—
Alan Yuhas,
New York Times,
27 Mar. 2025
Adjective
-
Eighty years ago, elite paratroopers were leaping out of similar aircraft on a secret mission called Operation Firefly.—
Sabrina Clay,
CNN Money,
5 Apr. 2025
-
Trees have a secret language that connects them to each other.—
Daniel Kreps,
Rolling Stone,
5 Apr. 2025
Noun
-
Back in 2015 Atwell had her own show, Agent Carter, back in the Agents of SHIELD era, chronicling her time as a government operative for two seasons.—
Paul Tassi,
Forbes.com,
5 Apr. 2025
-
During the Cold War, a similar ban was imposed in 1987 after a U.S. Marine in Moscow was compromised by a Soviet operative.—
Lee Habeeb,
MSNBC Newsweek,
4 Apr. 2025
Adjective
-
Elsewhere is a cozy study for getting some work done, while both a private garden and a rooftop terrace serve as ideal spots for dining alfresco when the London weather decides to cooperate.—
Tori Latham,
Robb Report,
8 Apr. 2025
-
Rural communities could be unequally impacted Unlike the postal service, private companies do not have the same service obligations requiring delivery to rural or sparsely-populated areas – even at a loss.—
Eric Lagatta,
USA Today,
7 Apr. 2025
Noun
-
Despite still not having an agent, Marshall had her managers secure her a script and even cut the reel for her self-tape herself.—
Ronda Racha Penrice,
HollywoodReporter,
5 Apr. 2025
-
Oh yes, and there was one other common denominator with all these contract extensions: None of the agents involved was named Scott Boras.—
Bill Madden,
New York Daily News,
5 Apr. 2025
Cite this Entry
“Undercover.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undercover. Accessed 14 Apr. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share