as in spies
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
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Example Sentences
Recent Examples of Synonyms for undercovers
Noun
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In 1977, two women living in the United States Embassy in Moscow become unlikely spies.—
Michael Schneider,
Variety,
12 June 2026 -
Both groups were accused of being spies, traitors and collaborators, according to the report.—
Sam Metz,
Los Angeles Times,
9 June 2026
Noun
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That same year, a Russian helicopter pilot who defected was killed in Spain, with Russian operatives as the prime suspects.—
Claudia Ciobanu,
Los Angeles Times,
16 June 2026
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In season three, from creator and writer Taylor Sheridan, hidden networks, foreign operatives and personal betrayals collide.—
David Hookstead OutKick,
FOXNews.com,
11 June 2026
Noun
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Garcia described the detainment as violent, noting that the agents left marks on his granddaughter’s wrist.—
Jason Green,
Mercury News,
26 Aug. 2025
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The manhunt for the fugitive father continues though, and this week agents with the Federal Bureau of Investigation are returning to the scene of the crime to conduct additional investigations.—
Chris Spargo,
People.com,
25 Aug. 2025
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Cite this Entry
“Undercovers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undercovers. Accessed 17 Jun. 2026.
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