/ Thesaurus / W Synonyms of water gillyflower Find synonyms for: Noun1. water gillyflower, American featherfoil, Hottonia inflata, featherfoil, feather-foilusage: a featherfoil of the eastern United States with submerged spongy inflated flower stalks and white flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language