Breadcrumb Home > Thesaurus > W Synonyms of west nile virus Find synonyms for: Noun1. West Nile virus, West Nile encephalitis virus, flavivirususage: the flavivirus that causes West Nile encephalitisWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language