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
Monica Johnston Johnston, in a phone interview from the hospital, talked of flies infesting the operating room and the intensive care unit.
—
Jane Arraf, NPR, 13 May 2024
Corman was the executive producer of this horror film about a mass of flesh-eating piranhas infesting a river.
—Greg Braxton, Los Angeles Times, 12 May 2024
See all Example Sentences for infest 
Jane Arraf, NPR, 13 May 2024
Corman was the executive producer of this horror film about a mass of flesh-eating piranhas infesting a river.
—Greg Braxton, Los Angeles Times, 12 May 2024
See all Example Sentences for infest
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'infest.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Infest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infest. Accessed 29 May. 2024.
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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