Breadcrumb Home > Thesaurus > H Cite Synonyms of harmfulness Find synonyms for: Noun1. harmfulness, injuriousness, destructivenessusage: destructiveness that causes harm or injury2. harmfulness, noisomeness, noxiousness, unwholesomeness, morbidness, morbidityusage: the quality of being noxiousWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved. TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress Noble Titles and Ranks in a Monarchy Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: puerile Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language