Definition of infest verb from the Oxford Advanced Learner's Dictionary

 

infest

 verb
verb
BrE BrE//ɪnˈfest//
 
; NAmE NAmE//ɪnˈfest//
 
Verb Forms present simple I / you / we / they infest
BrE BrE//ɪnˈfest//
 
; NAmE NAmE//ɪnˈfest//
 
he / she / it infests
BrE BrE//ɪnˈfests//
 
; NAmE NAmE//ɪnˈfests//
 
past simple infested
BrE BrE//ɪnˈfestɪd//
 
; NAmE NAmE//ɪnˈfestɪd//
 
past participle infested
BrE BrE//ɪnˈfestɪd//
 
; NAmE NAmE//ɪnˈfestɪd//
 
-ing form infesting
BrE BrE//ɪnˈfestɪŋ//
 
; NAmE NAmE//ɪnˈfestɪŋ//
 
Construction
 
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[usually passive] infest something (especially of insects or animals such as rats) to exist in large numbers in a particular place, often causing damage or disease shark-infested waters The kitchen was infested with ants. These parasites infest the gills of freshwater fish. See related entries: Construction Word 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 cent.
See the Oxford Advanced American Dictionary entry: infest