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
Related Words
Dissimilar Words
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of undercover
Kate Linderman, Kansas City Star, 18 July 2025
Hale, 55, served in the department for 26 years working in narcotics, undercover and eventually serving as a department spokesperson and deputy chief.
—Harrison Mantas, Fort Worth Star-Telegram, 18 July 2025
Guy Lawson, Rolling Stone, 24 Mar. 2024
Back at the hospital Jack tells Brady that working undercover took a lot of courage.
—Jessica Radloff, Glamour, 8 Sep. 2023
See All Example Sentences for undercover
Noun
In 2023, an undercover agent pretending to be a 29-year-old woman with an 8-year-old daughter in West Palm Beach, Florida, came into contact with Eriksen through Kik, federal officials said.
—Kate Linderman, Kansas City Star, 18 July 2025
Hale, 55, served in the department for 26 years working in narcotics, undercover and eventually serving as a department spokesperson and deputy chief.
—Harrison Mantas, Fort Worth Star-Telegram, 18 July 2025
Adverb
Blazer had been wearing a wire, working in tandem with an FBI undercover, ensnaring more than ten coaches in an elaborate plot that revealed corruption in the basketball programs at Louisville, Arizona, LSU, USC and other schools.
—Guy Lawson, Rolling Stone, 24 Mar. 2024
Back at the hospital Jack tells Brady that working undercover took a lot of courage.
—Jessica Radloff, Glamour, 8 Sep. 2023
See All Example Sentences for undercover
Recent Examples of Synonyms for undercover
Adjective
-
Speaking with Robbie Fox on the My Mom's Basement podcast, the former WWE Champion shared the story of the clandestine meeting.—
Andrew Ravens,
MSNBC Newsweek,
16 July 2025
-
Even when targeting America’s enemies, not all are supportive of clandestine cyberattacks.—
Thomas Brewster,
Forbes.com,
15 July 2025
Adjective
-
The bill would ban face coverings during public enforcement operations unless medically required or part of a covert investigation.—
Billal Rahman,
MSNBC Newsweek,
24 July 2025
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The human touch is also crucial for ensuring accountability with agentic AI use, particularly for security considerations like accountability and distinguishing a genuine user from a covert threat.—
Imran Aftab,
Forbes.com,
17 July 2025
Noun
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Her group of spies, scouts, and other freedom fighters piloted three Union steamboats snaking up the lower Combahee River with Colonel James Montgomery of the Second South Carolina Volunteers and one battery of the Third Rhode Island Artillery.—
Chadd Scott,
Forbes.com,
19 July 2025
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James Bond producer Barbara Broccoli, who surprised the film world and 007 fans by stepping away from the franchise earlier this year, has endorsed the choice of Denis Villeneuve as director for the next instalment of the spy thriller.—
Melanie Goodfellow,
Deadline,
17 July 2025
Adverb
-
For instance, the Mojave Desert tortoise (listed as endangered by the state of California) spends most of the year underground in places like Joshua Tree National Park.—
Ruffin Prevost,
AFAR Media,
18 July 2025
-
Install a fence that’s slanted outward and about 3 feet tall with a short section buried underground.—
Arricca Elin SanSone,
Southern Living,
18 July 2025
Adjective
-
By law, grand jury testimony is kept secret, except in matters of national security or counterintelligence, neither of which applies in this case.—
Meredith Kile,
People.com,
22 July 2025
-
Grand jury proceedings are typically secret, and files from them can only be released in limited circumstances.—
Danielle Chemtob,
Forbes.com,
21 July 2025
Noun
-
Indeed, Jared Fleisher, one of Gilbert's top operatives, gave mayoral candidate Fred Durhal III's campaign $2,000.—
M.L. Elrick,
Freep.com,
23 July 2025
-
Neither a complacent, neutered Congress nor a Supreme Court controlled by lifelong GOP partisan operatives appear willing or able to stop it.—
David Faris,
MSNBC Newsweek,
21 July 2025
Adjective
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Spelman will be cremated in a private ceremony Thursday, his family said.—
Emiliano Tahui Gómez,
Austin American Statesman,
25 July 2025
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Appreciate Luxury with Great Views With more than 450 rooms, each with a private balcony overlooking Corpus Christi Bay, the Omni Hotel offers the city's most luxurious accommodations.—
Gabi De la Rosa,
Southern Living,
24 July 2025
Noun
-
Record company executives, agents, producers and bookers dominate the panel discussions.—
Michael Barnes,
Austin American Statesman,
23 July 2025
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Last year, thanks to a combination of agents, generative AI, and blockchain, the transaction volume of stablecoins exceeded Mastercard’s global payments, driving a truly autonomous, scalable financial world.—
Judith Magyar,
Forbes.com,
22 July 2025
Cite this Entry
“Undercover.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undercover. Accessed 30 Jul. 2025.
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