/ Thesaurus / F Synonyms of fat soluble Find synonyms for: Adjective1. fat-soluble, soluble (vs. insoluble)usage: soluble in fats; "fat-soluble vitamin A"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language