as in informer
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Recent Examples of infiltrator
Last Saturday, an Islamic State infiltrator ambushed a meeting between American soldiers and their local counterparts in a Syrian desert town.
—
Robert F. Worth, The Atlantic, 18 Dec. 2025
Attacker had raised suspicions Al-Baba said the internal security forces’ leadership had recently become suspicious that there was an infiltrator leaking information to IS and began evaluating all members in the Badiya area.
—Abby Sewell, Fortune, 14 Dec. 2025
The infiltrator has been hunting down other agents and even abducted Moneypenny.
—Carly Tagen-Dye, PEOPLE, 10 Nov. 2025
He is brought into the fold by Helen (Elizabeth McGovern), leader of the Talamasca’s New York Motherhouse, to help snuff out an infiltrator in the organization.
—Rebecca Alter, Vulture, 5 Sep. 2025
Robert F. Worth, The Atlantic, 18 Dec. 2025
Attacker had raised suspicions Al-Baba said the internal security forces’ leadership had recently become suspicious that there was an infiltrator leaking information to IS and began evaluating all members in the Badiya area.
—Abby Sewell, Fortune, 14 Dec. 2025
The infiltrator has been hunting down other agents and even abducted Moneypenny.
—Carly Tagen-Dye, PEOPLE, 10 Nov. 2025
He is brought into the fold by Helen (Elizabeth McGovern), leader of the Talamasca’s New York Motherhouse, to help snuff out an infiltrator in the organization.
—Rebecca Alter, Vulture, 5 Sep. 2025
Recent Examples of Synonyms for infiltrator
Noun
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Frizer and Skeres were fraudsters, and the sinister Poley was an informer, crucial to the exposure of the Babington Plot.—
Anthony Lane,
New Yorker,
8 Sep. 2025
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Option 2: If one prisoner informs while the other stays silent, the informer will go free while the silent one receives the harshest sentence.—
Michael Ashley,
Forbes.com,
29 July 2025
Noun
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Since most sleepers add an extra blanket or two during the winter, they should be washed once a month to remove dirt and allergens.—
Mary Marlowe Leverette,
Southern Living,
26 Jan. 2026
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The four-sleeper debut model featured in all our photos is built atop a 199-in (505-cm) Ford Tourneo Custom with 168-hp diesel engine, eight-speed automatic transmission and all-wheel drive.—
New Atlas,
New Atlas,
24 Jan. 2026
Noun
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Once an unconscious stool pigeon, always an unconscious stool pigeon.—
Howie Carr,
Boston Herald,
12 Nov. 2025
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Russo turned stool pigeon within a month of his November 2017 arrest for selling a kilo of cocaine to an undercover agent.—
John Annese,
New York Daily News,
26 Feb. 2025
Noun
-
Shadow Alliance Former National Security Agency counterspy John Schindler wrote on his Top Secret Umbra blog in January 2024 that Epstein appeared to have been part of a shadowy Israeli influence operation characterized as MEGA.—
Nick Mordowanec,
MSNBC Newsweek,
15 July 2025
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During the Spanish Civil War, an agent on a mission to purchase coal meets with murder and counterspies.—
Los Angeles Times,
Los Angeles Times,
13 Sep. 2019
Cite this Entry
“Infiltrator.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infiltrator. Accessed 29 Jan. 2026.
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