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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The only people who crossed the front, really, were spies.—
Literary Hub,
Literary Hub,
24 Feb. 2026 -
The Cuban spies provided the flight information and the MiG pilots carried out the mission.—
Hank Tester,
CBS News,
24 Feb. 2026
Noun
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Mexican special forces operatives and the National Guard’s Special Immediate Reaction Force then swooped into action, putting together a plan and launching a raid within the next 24 hours.—
Gonzalo Zegarra,
CNN Money,
24 Feb. 2026
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One of those operatives was none other than Mencho’s brother.—
Daniel DePetris,
Chicago Tribune,
24 Feb. 2026
Noun
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Then, in December, ICE agents detained Armero and her daughters during a routine check-in.—
Arkansas Online,
Arkansas Online,
1 Mar. 2026
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The Dow tumbled more than 800 points on Monday, in large part because of a Substack post from Citrini Research that laid out hypothetical scenarios for how developments in AI could disrupt certain parts of the economy, including AI agents making white-collar work superfluous.—
Auzinea Bacon,
CNN Money,
28 Feb. 2026
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“Undercovers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undercovers. Accessed 2 Mar. 2026.
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