infest

Definition of infestnext
as in to plague
to spread or swarm over in a troublesome manner in desperation, we called in an exterminator because the house was infested with ants

Synonyms & Similar Words

Relevance

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of infest Producer Greer Simpkin noted that the swarms of flies visible throughout required no visual effects – the location was so badly infested that cast and crew regularly swallowed them during takes. Naman Ramachandran, Variety, 17 June 2026 The screwworm is actually a fly whose larvae infest the wounds of warm-blooded animals. Ilena Peng, Fortune, 13 June 2026 The larvae can infest any warm-blooded animal, including wildlife, pets and occasionally even humans. Aimee Picchi, CBS News, 12 June 2026 Screwworms Primarily Affect Livestock Screwworms can infest farm animals including cattle, goats, and sheep. Emily Kay Votruba, EverydayHealth.com, 11 June 2026 See All Example Sentences for infest
Recent Examples of Synonyms for infest
Verb
  • Instead, Isaac, 28, will become an unrestricted free agent after nine years in Orlando that were plagued by injury.
    Jason Beede, The Orlando Sentinel, 27 June 2026
  • Greenberg tried his best to ignore an irritating ankle injury that had plagued him the last couple of weeks and grimaced under the hazy sunlight as the pitcher, probably 20 or more years his junior, stared him down.
    Christopher Buchanan, Los Angeles Times, 26 June 2026
Verb
  • The news comes as Lackland Air Force Base in Texas — home to the Air Force's Basic Military Training program — grapples with a flu outbreak that has infected 275 people in recent weeks, a congressional staffer with knowledge of the matter told CBS News.
    Eleanor Watson, CBS News, 25 June 2026
  • Hall was infected in the 2000s and diagnosed in 2006, according to the Bay Area Lyme Foundation.
    Amaris Encinas, USA Today, 25 June 2026
Verb
  • In recent years, Haiti has seen a presidential assassination and extremely dangerous and violent conditions in the country, with entire regions being overrun with gangs.
    Daniella Silva, NBC news, 26 June 2026
  • Coming later this year, Bass X Macina is set in a lawless Steampunk West overrun by brutal outlaws, machines and supernatural terrors, while Sparks of Tomorrow follows how technological progress evolved along a different path shaped by steam power blankets Kyoto in smoke.
    Max Goldbart, Deadline, 23 June 2026
Verb
  • Seltz’s system crawls hundreds of millions of pages a day, and returns results in under 200 milliseconds.
    Jeremy Kahn, Fortune, 24 June 2026
  • The animal eventually crawled under a dock.
    Kimberlee Speakman, PEOPLE, 23 June 2026
Verb
  • Cold water shock impairs breathing and can overwhelm even strong swimmers within seconds.
    Kara Fox, CNN Money, 28 June 2026
  • Along the highway linking Caracas to the coast, streams of civilians carried water, food, and medicine toward La Guaira on foot and by motorcycle, stepping in as the scale of the disaster overwhelmed the official effort.
    Luis E. Romero, Forbes.com, 27 June 2026

Browse Nearby Words

Cite this Entry

“Infest.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infest. Accessed 30 Jun. 2026.

More from Merriam-Webster on infest

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster