as in sneaking
to introduce in a gradual, secret, or clever way
over time, undercover agents infiltrated the crime ring and eventually busted their gambling racket
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Recent Examples of infiltrating
Airborne tear gas can drift, infiltrating residents’ apartments through vents, air conditioning units and windowsills.
—
Graham Hurley, CNN Money, 20 Jan. 2026
The second greatest threat for the year, according to Experian, are deepfake candidates infiltrating remote workforces.
—Amanda Gerut, Fortune, 13 Jan. 2026
Hannah cares for a charming high school athlete while working with Charlie to cover their tracks by infiltrating the hospital computer system.
—Randall Colburn, Entertainment Weekly, 5 Jan. 2026
As early as 2019, Fuentes spoke to his followers about infiltrating the right by blending in with the rest of the GOP.
—Ali Breland, The Atlantic, 13 Dec. 2025
Or from infiltrating the ‘free economic zone’ under the guise of ‘civilians’ and taking control of it?
—Ellen Mitchell, The Hill, 12 Dec. 2025
Hackers leveraging malware systems and other cybercriminal tools are infiltrating online freight marketplaces to make off with high-value cargo while items are in transit.
—Julia Bonavita, FOXNews.com, 8 Dec. 2025
Meanwhile, the same forces that have undermined human vaccination — politicization, misinformation, distrust — are infiltrating veterinary care.
—Henry I. Miller, Boston Herald, 25 Nov. 2025
Billitier did have a hell of a story to tell about his decades of undercover work for the FBI, including several years infiltrating a Colombian drug ring in Texas.
—Steve Belanger, HollywoodReporter, 23 Oct. 2025
Graham Hurley, CNN Money, 20 Jan. 2026
The second greatest threat for the year, according to Experian, are deepfake candidates infiltrating remote workforces.
—Amanda Gerut, Fortune, 13 Jan. 2026
Hannah cares for a charming high school athlete while working with Charlie to cover their tracks by infiltrating the hospital computer system.
—Randall Colburn, Entertainment Weekly, 5 Jan. 2026
As early as 2019, Fuentes spoke to his followers about infiltrating the right by blending in with the rest of the GOP.
—Ali Breland, The Atlantic, 13 Dec. 2025
Or from infiltrating the ‘free economic zone’ under the guise of ‘civilians’ and taking control of it?
—Ellen Mitchell, The Hill, 12 Dec. 2025
Hackers leveraging malware systems and other cybercriminal tools are infiltrating online freight marketplaces to make off with high-value cargo while items are in transit.
—Julia Bonavita, FOXNews.com, 8 Dec. 2025
Meanwhile, the same forces that have undermined human vaccination — politicization, misinformation, distrust — are infiltrating veterinary care.
—Henry I. Miller, Boston Herald, 25 Nov. 2025
Billitier did have a hell of a story to tell about his decades of undercover work for the FBI, including several years infiltrating a Colombian drug ring in Texas.
—Steve Belanger, HollywoodReporter, 23 Oct. 2025
Recent Examples of Synonyms for infiltrating
Verb
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That feature has since been covered over with concrete, so don’t get any funny ideas about sneaking into the palace after hours.—
Tori Latham,
Robb Report,
30 Jan. 2026
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Of course, after a while the thrill of getting caught fades, and sneaking around becomes deeply sad rather than sexy.—
Sam Reed,
Glamour,
29 Jan. 2026
Verb
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But as Scheierman prepared to inbound the ball in the frontcourt, Mazzulla pivoted, calling Williams to the bench and inserting Gonzalez.—
Zack Cox,
Boston Herald,
24 Jan. 2026
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The Titans, who were coming off single-digit losses to UC Davis and UC Riverside on the road last week, went with a different starting lineup, inserting Davis White in at guard in place of fellow freshman Bryce Cofield.—
Dan Arritt,
Oc Register,
23 Jan. 2026
Verb
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The insoles mold comfortably to your foot, and the rubber outsoles keep slipping and sliding at bay.—
Annie Blackman,
InStyle,
28 Jan. 2026
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Plus, this 100-piece velvet set prevents tops from slipping off.—
Rachel Trujillo,
PEOPLE,
28 Jan. 2026
Verb
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The spa Spa Town is a collection of elegant tents connected by a timber walkway winding through the meadow.—
Condé Nast,
Condé Nast Traveler,
23 Jan. 2026
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The long and winding road over the fate of TikTok — the enormously popular social video platform that has been a force in American youth culture and entertainment — has come to an end.—
Cerys Davies,
Los Angeles Times,
23 Jan. 2026
Cite this Entry
“Infiltrating.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infiltrating. Accessed 31 Jan. 2026.
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