/ Thesaurus / C Synonyms of compactness Find synonyms for: Noun1. concentration, density, denseness, tightness, compactness, spacing, spatial arrangementusage: the spatial property of being crowded together2. compactness, solidity, solidnessusage: the consistency of a compact solidWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language