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
And, even in a Western, rural area, your property would need to be infested with wild rodents carrying the virus.
—
Julia Ries, Health, 26 Apr. 2025
Bad behavior, bad ideas and bad policies are infesting themselves in public life, the economy and markets — to the surprise of many ardent supporters of Trump.
—Mike O'Sullivan, Forbes.com, 25 Apr. 2025
The New Mexico property where actor Gene Hackman and his wife Betsy Arakawa were found dead in February appears to have been infested with rodents that carry the deadly hantavirus responsible for her death.
—Brian Niemietz, New York Daily News, 15 Apr. 2025
Exposure can occur when people are cleaning up in buildings infested by rodents.
—Martha Ross, Mercury News, 16 Apr. 2025
See All Example Sentences for infest
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Julia Ries, Health, 26 Apr. 2025
Bad behavior, bad ideas and bad policies are infesting themselves in public life, the economy and markets — to the surprise of many ardent supporters of Trump.
—Mike O'Sullivan, Forbes.com, 25 Apr. 2025
The New Mexico property where actor Gene Hackman and his wife Betsy Arakawa were found dead in February appears to have been infested with rodents that carry the deadly hantavirus responsible for her death.
—Brian Niemietz, New York Daily News, 15 Apr. 2025
Exposure can occur when people are cleaning up in buildings infested by rodents.
—Martha Ross, Mercury News, 16 Apr. 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 3 May. 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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