/ Thesaurus / D Synonyms of downy mildew Find synonyms for: Noun1. downy mildew, false mildew, mildewusage: any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melonsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language