infest definition - Dictionary

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in·fest [ in fést ] (past and past participle in·fest·ed, present participle in·fest·ing, 3rd person present singular in·fests)

transitive verb

Definition:

1. take over place: to overrun a place or site in large numbers and become threatening, harmful, or unpleasant

Their clothing was infested with lice.

2. live as parasite on: to live as a parasite on or in something

[Mid-16th century. Directly or via French< Latin infestare "to attack" < infestus "hostile"]

in·fes·ta·tion [ ìn fe stáysh'n ] noun

in·fest·ed [ in féstəd ] adjective

in·fest·er noun