infest

verb

in·​fest in-ˈfest How to pronounce infest (audio)
infested; infesting; infests

transitive verb

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
infestant noun
infestation noun
infester noun

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 Silverfish, also known as the longtail silverfish, are a wingless insect that can infest your home and feed on your belongings and the structure of your home. Sherri Gordon, Health, 7 Sep. 2024 The original film centered on the Freeling family, who move into a new home only to discover that it is infested with a horde of ghosts. Joe Otterson, Variety, 19 Aug. 2024 The flour will clump if exposed to moisture, and pests sometimes infest the packaging if left in a storage cabinet for too long without adequate protection. Perri Ormont Blumberg, Southern Living, 4 Sep. 2024 At Galicia Farms in Fort Lupton, workers in 2017 were forced to cover a large hole near the dining table with a metal sheet to avoid rodents and insects infesting their home, the federal Department of Labor found. Sam Tabachnik, The Denver Post, 1 Sep. 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.

Word History

Etymology

French infester, from Latin infestare, from infestus hostile

First Known Use

1602, in the meaning defined at sense 1

Time Traveler
The first known use of infest was in 1602

Dictionary Entries Near infest

Cite this Entry

“Infest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infest. Accessed 20 Sep. 2024.

Kids Definition

infest

verb
in·​fest in-ˈfest How to pronounce infest (audio)
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
infestation noun

Medical Definition

infest

transitive verb
in·​fest in-ˈfest How to pronounce infest (audio)
: to live in or on as a parasite
the flea that infests cats
horses infested with worms
compare infect

More from Merriam-Webster on infest

Last Updated: - Updated example sentences
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