Breadcrumb Home > Thesaurus > W Synonyms of waterweed Find synonyms for: Noun1. waterweed, aquatic plant, water plant, hydrophyte, hydrophytic plantusage: a weedy aquatic plant of genus ElodeaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of waterweed (Dictionary) ✖ Related Content Daily Word Quiz: tautology Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language