/ Thesaurus / U Synonyms of unhealthfulness Find synonyms for: Noun1. unhealthfulness, unwholesomeness, morbidness, morbidityusage: the quality of promoting poor healthWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inane Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language