/ Thesaurus / M Synonyms of mournfulness Find synonyms for: Noun1. mournfulness, sorrowfulness, ruthfulness, sorrowusage: a state of gloomy sorrowWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diurnal Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language