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
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Recent Examples of undercover
David Culver, CNN, 5 Mar. 2025
But the request remained in limbo as López Obrador severely curtailed his country’s cooperation with the U.S. to protest undercover American law enforcement operations targeting Mexican political and military officials.
—Philip Marcelo and Jennifer Peltz, Los Angeles Times, 28 Feb. 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
The undercover officer pointed out that the US used to station troops at a base in Manta, in the west of Ecuador on the Pacific coast, before foreign bases were outlawed by the constitution.
—David Culver, CNN, 5 Mar. 2025
But the request remained in limbo as López Obrador severely curtailed his country’s cooperation with the U.S. to protest undercover American law enforcement operations targeting Mexican political and military officials.
—Philip Marcelo and Jennifer Peltz, Los Angeles Times, 28 Feb. 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
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The illicitly mined resources, which included valuable minerals and precious stones, were smuggled out of the country through clandestine networks, bypassing official regulatory controls for the benefit of consortium members at the expense of the state coffers.—
Antonio Maria Delgado,
Miami Herald,
11 Mar. 2025
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For those hoping to wed immediately, whether to avoid family scrutiny or cover up an out-of-wedlock pregnancy, clandestine marriages performed by Anglican clergy offered a welcome alternative.—
Alexandra Cox,
Smithsonian Magazine,
10 Mar. 2025
Adjective
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Despite numerous warnings, Cuomo ignored engineers’ concerns, went ahead with construction, and attempted to cover it up by secretly replacing the defective bolts in a covert night operation akin to military action.—
Ryan Silverstein,
New York Daily News,
16 Mar. 2025
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Even a covert leader can inadvertently alter employee behavior, resulting in a skewed view of daily operations.—
Vibhas Ratanjee,
Forbes,
14 Mar. 2025
Noun
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Matt Damon originated the role of the spy who suffers from psychogenic amnesia and is forced to unlock his connection to the CIA.—
Anthony D'Alessandro,
Deadline,
20 Mar. 2025
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The incident comes one day after the Trump administration released new and newly unredacted spy agency files about 1963 assassination of President John F. Kennedy.—
Josh Meyer,
USA TODAY,
19 Mar. 2025
Adverb
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The technology captures carbon dioxide emissions from industrial sites and stores them deep underground.—
Spencer Kimball,
CNBC,
11 Mar. 2025
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The performance space, known as Big Mouth Cave, is 333 feet underground.—
Colleen Creamer,
Chicago Tribune,
5 Mar. 2025
Adjective
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While discussing who would be taking care of their dogs that weekend, Denise accidentally let Sami's secret slip.—
Liza Esquibias,
People.com,
12 Mar. 2025
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Nobody can access your 1Password data without the secret key, and being asked to enter this should set those red flags flapping even more.—
Davey Winder,
Forbes,
12 Mar. 2025
Noun
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Elements of her can be found on Lioness in Zoe Saldaña’s Joe McNamara, a CIA operative trying to save the world from the swarthy — terrorists in Season One, Mexican cartels in Season Two — while raising two girls.—
Stephen Rodrick,
Rolling Stone,
9 Mar. 2025
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Weighing just 157g, the headset is light enough for call center operatives to wear it for a full eight-hour working day.—
Mark Sparrow,
Forbes,
28 Feb. 2025
Adjective
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The appearance came 11 days after Parton's famously private husband died in his hometown of Nashville after the couple were married nearly 60 years.—
EW.com,
EW.com,
14 Mar. 2025
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The rooms and suites feature private balconies, soaking tubs, bespoke Italian furnishings, and original frescoes.—
Regan Stephens,
Travel + Leisure,
14 Mar. 2025
Noun
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Challenges & Considerations Adopting AI agents for data solutions comes with important challenges that businesses must address: Security Risks: Granting AI agents broad access to data systems introduces new security vulnerabilities.—
Suri Nuthalapati,
Forbes,
12 Mar. 2025
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The past few weeks have felt like a Cold War thriller in which an enemy agent somehow infiltrates the top of the United States government.—
David Frum,
The Atlantic,
12 Mar. 2025
Cite this Entry
“Undercover.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undercover. Accessed 24 Mar. 2025.
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