infested; infesting; infests
1
: to spread or swarm in or over in a troublesome manner
a slum infested with crime
shark-infested waters
2
: to live in or on as a parasite
Examples of infest in a Sentence
in desperation, we called in an exterminator because the house was infested with ants
Recent Examples on the Web
Inmates have also complained of spoiled and infested food and jail staff have been accused of ignoring detainees’ serious and in some cases life-threatening medical issues.
—
Emma Seiwell, New York Daily News, 10 July 2025
Unfortunately, the region was infested with pirates and evil spirits.
—H.m.a. Leow, JSTOR Daily, 5 July 2025
People responded generously after reading eight Wish List stories, which included a Covington mother of three in need of reliable transportation and Cincinnati man forced to toss all his belongings after his apartment became infested with bedbugs.
—Jeff Suess, The Enquirer, 2 July 2025
Aphids present in the garden can infest plants but are easily managed with horticultural sprays or a heavy
stream of water.
—Kim Toscano, Southern Living, 1 July 2025
See All Example Sentences for infest
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Emma Seiwell, New York Daily News, 10 July 2025
Unfortunately, the region was infested with pirates and evil spirits.
—H.m.a. Leow, JSTOR Daily, 5 July 2025
People responded generously after reading eight Wish List stories, which included a Covington mother of three in need of reliable transportation and Cincinnati man forced to toss all his belongings after his apartment became infested with bedbugs.
—Jeff Suess, The Enquirer, 2 July 2025
Aphids present in the garden can infest plants but are easily managed with horticultural sprays or a heavy
stream of water.
—Kim Toscano, Southern Living, 1 July 2025
See All Example Sentences for infest
Cite this Entry
“Infest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infest. Accessed 14 Jul. 2025.
Copy CitationKids Definition
infest
verb
in·fest
in-ˈfest 
1
: to spread or swarm in or over in a troublesome manner
a neighborhood infested with crime
shark-infested waters
2
: to live in or on as a parasite
horses infested with worms
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