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Definition of infest
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
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Examples of infest in a Sentence
in desperation, we called in an exterminator because the house was infested with ants
Recent Examples of infest from the Web
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This will prevent carpenter ants from infesting the wood and causing structural damage.
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The bed might be infested with bedbugs, but the TV remote will be germ-free.
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The animals were infested with lice, suffering from diarrhea and underweight, said Susie Coston, Farm Sanctuary’s national shelter director.
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The inside of the arch may have been infested with asbestos in a May 14 fire that consumed a warehouse under the bridge and sent heavy smoke through the structure.
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So diabolical is the al-Qaeda/ISIS disease that has infested the brains and souls of too many young men.
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The downside was that chickens had already lived there, so it was infested with fleas.
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The victim in this case was me—though there will soon be many others as Guy Ritchie’s pox on Camelot infests the multiplexes.
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Despite reports, the waters surrounding Great Exuma are not shark infested.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infest'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of infest
French infester, from Latin infestare, from infestus hostile
INFEST Defined for English Language Learners
infest
playDefinition of infest for English Language Learners
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of something harmful or unwanted : to be in or over (a place, an animal, etc.) in large numbers
INFEST Defined for Kids
infest
playDefinition of infest for Students
infested
;infesting
: to spread or swarm in or over in a harmful manner Termites infested the tree.
Medical Dictionary
Learn More about infest
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Thesaurus: All synonyms and antonyms for infest Spanish Central: Translation of infest Nglish: Translation of infest for Spanish speakers Britannica English: Translation of infest for Arabic speakers
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