From Middle English infesten, from Old French infester (“to infest”), from Latin īnfestō (“assail, molest”, verb), from īnfestus (“hostile”).
infest (third-person singular simple present infests, present participle infesting, simple past and past participle infested)
- To inhabit a place in unpleasantly large numbers
- Insects are infesting my basement!
- (pathology, of a parasite) To invade a host plant or animal
infest (comparative more infest, superlative most infest)
- (obsolete) mischievous; hurtful; harassing
- (Can we find and add a quotation of Spenser to this entry?)