/ Thesaurus / U Synonyms of undiluted Find synonyms for: Adjective1. undiluted (vs. diluted), black, concentrated, neat, straight, full-strengthusage: not diluted; "undiluted milk"; "an undiluted racial strain"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language