/ Thesaurus / G Synonyms of greater water parsnip Find synonyms for: Noun1. greater water parsnip, Sium latifolium, marsh plant, bog plant, swamp plantusage: large stout white-flowered perennial found wild in shallow fresh water; EuropeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language