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
From the M-W Editors
Examples of infest in a sentence
in desperation, we called in an exterminator because the house was infested with ants
Origin and Etymology of infest
French infester, from Latin infestare, from infestus hostile
First Known Use: 1602
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
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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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