/ Thesaurus / S Synonyms of sucking louse Find synonyms for: Noun1. louse, sucking louse, insectusage: wingless usually flattened bloodsucking insect parasitic on warm-blooded animalsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language