Definition of infest in English:

infest

Syllabification: in·fest
Pronunciation: /inˈfest
 
/

verb

[with object] (usually be infested)
(Of insects or animals) be present (in a place or site) in large numbers, typically so as to cause damage or disease: the house is infested with cockroaches [as adjective, in combination]: (-infested) shark-infested waters
More example sentences
  • Fleas infest the animal (rats, but other rodents as well), and these fleas move freely over to human hosts.
  • His McGill ghetto apartment is infested with mice and, try as he might, he can't seem to get rid of them.
  • The species was believed to have been wiped out in 1918 when rats infested their home island.
Synonyms
overrun, spread through, invade, infiltrate, pervade, permeate, inundate, overwhelm; beset, plague, swarmoverrun, swarming, teeming, crawling, alive, ridden, lousy; plagued, beset

Origin

late Middle English (in the sense 'torment, harass'): from French infester or Latin infestare 'assail', from infestus 'hostile'. The current sense dates from the mid 16th century.

Derivatives

infestation

Pronunciation: /ˌinfeˈstāSHən/
noun
More example sentences
  • Campaigners warn that Britain's streets could be plagued by vermin infestations if people continue to dump their rubbish irresponsibly.
  • Movies about the end of the world or uncontrollable plagues and infestations are huge box office successes.
  • Indeed, worm infestations, lice and a variety of other health problems plague the residents of the water villages.

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