/ Thesaurus / W Synonyms of water insoluble Find synonyms for: Adjective1. water-insoluble, non-water-soluble, insoluble (vs. soluble), indissolubleusage: not soluble in waterWordNet 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