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
Amber Corrine, VIBE.com, 31 Jan. 2025
In one of the drug cases, an undercover officer and confidential informant went to the Higher Ground area in November and made contact with a 52-year-old man.
—Mara H. Gottfried, Twin Cities, 29 Jan. 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
Take a look at his sentiments and also his undercover mission above.
—Amber Corrine, VIBE.com, 31 Jan. 2025
In one of the drug cases, an undercover officer and confidential informant went to the Higher Ground area in November and made contact with a 52-year-old man.
—Mara H. Gottfried, Twin Cities, 29 Jan. 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
-
The hardline group does not allow girls to study beyond grade six, and so the project runs classes online, through the radio and even has a network of clandestine schools that educate over 5,000 girls across Afghanistan and employ over 100 teachers.—
Diaa Hadid,
NPR,
3 Feb. 2025
-
Born in Poland in 1920, Karol Józef Wojtyła attended clandestine seminaries and frequented groups of intellectuals who met in secret to discuss ways of undermining Communism from within.—
Yvonnick Denoël,
airmail.news,
1 Feb. 2025
Adjective
-
Universal revealed character details for each of the film's leads, which can be read below: Academy Award® nominee Johansson plays skilled covert operations expert Zora Bennett, contracted to lead a skilledteam on a top-secret mission to secure the genetic material.—
Thomas G. Moukawsher,
Newsweek,
5 Feb. 2025
-
Johansson plays covert operations expert Zora Bennett, who leads the top-secret mission.—
Samantha Bergeson,
IndieWire,
5 Feb. 2025
Noun
-
Marianne Faithfull's father was once a spy; her mother a pence-less baroness.—
Scott Simon,
NPR,
1 Feb. 2025
-
Wanting to sacrifice the former sacrifice No, most parents aren't former spies, but having to choose between work and parenting is a struggle many can relate to.—
Anna Halkidis,
Parents,
31 Jan. 2025
Adverb
-
Geothermal heat pumps work by pushing heat underground or pulling it from underground, depending on the season.—
Brandee Gruener,
Southern Living,
28 Jan. 2025
-
To explore this, Dundas and his team ran models based on flood volumes and flow rates that could occur if water were trapped deep underground.—
Victoria Corless,
Space.com,
24 Jan. 2025
Adjective
-
In the years immediately following, Yardley remained in Indiana, working on a series of other books and a commercial secret ink.—
Peter Zablocki,
Smithsonian Magazine,
4 Feb. 2025
-
Perched on a coastline of pure beauty, its sandy coves and rocky shorelines offer secret summer escapes without the crowds, while downtown, the art galleries, antique shops, and beer gardens are bustling with activity.—
Eliseé Browchuk,
Vogue,
3 Feb. 2025
Noun
-
Saturday's operation followed military airstrikes on Jan. 30 in northwest Syria, killing a senior operative in Hurras al-Din, an al-Qaida affiliate, U.S. Central Command said.—
TARA COPP,
arkansasonline.com,
2 Feb. 2025
-
In a statement, Secretary of Defense Pete Hegseth confirmed the strikes targeting ISIS-Somalia operatives in the Golis mountains occurred in coordination with the Somali government.—
Sarah D. Wire,
USA TODAY,
1 Feb. 2025
Adjective
-
People in certain regions of Minnesota, especially the southeast, have long been at a higher risk of nitrate contamination from their private wells.—
MinnPost,
Twin Cities,
7 Feb. 2025
-
The student loan interest deduction allows eligible taxpayers to deduct up to $2,500 in interest paid on federal or private student loans from their taxable income.—
Thomas G. Moukawsher,
Newsweek,
6 Feb. 2025
Noun
-
The agents also argued more indie films are being packaged and pre-sold to distributors outside of the festival, with Sundance chasing more true discoveries and a slate that leans very indie.—
Brian Welk,
IndieWire,
4 Feb. 2025
-
The department said more than 100,000 people are expected to be in New Orleans in and around the arena to celebrate the game, and nearly 700 DHS agents are on site to help secure the event.—
Jennifer Jacobs,
CBS News,
4 Feb. 2025
Thesaurus Entries Near undercover
Cite this Entry
“Undercover.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undercover. Accessed 13 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share