infest.
To inhabit a place in unpleasantly large numbers; to plague, harass.
Meaning & usage
To inhabit a place in unpleasantly large numbers; to plague, harass.
Insects are infesting my basement!
To invade a host plant or animal.
Where this word comes from
From Middle English infesten, from Old French infester (“to infest”), from Latin īnfestō (“assail, molest”, verb), from īnfestus (“hostile”), of uncertain origin.
Mischievous; hurtful; harassing.
Where this word comes from
From Middle English infesten, from Old French infester (“to infest”), from Latin īnfestō (“assail, molest”, verb), from īnfestus (“hostile”), of uncertain origin.
Hostility.
Where this word comes from
From Middle English infesten, from Old French infester (“to infest”), from Latin īnfestō (“assail, molest”, verb), from īnfestus (“hostile”), of uncertain origin.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.