Breadcrumb Home > Thesaurus > I Synonyms of infest Find synonyms for: Verb 1. infest, overrun, invade, occupy usage: invade in great numbers; "the roaches infested our kitchen" 2. invade, overrun, infest, inhabit usage: occupy in large numbers or live on a host; "the Kudzu plant infests much of the South and is spreading to the North" 3. infest, inhabit usage: live on or in a host, as of parasites WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of infest (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: antebellum Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language