Breadcrumb Home > Thesaurus > M Synonyms of mortality Find synonyms for: Noun 1. mortality, impermanence, impermanency usage: the quality or state of being mortal 2. deathrate, death rate, mortality, mortality rate, fatality rate, rate usage: the ratio of deaths in an area to the population of that area; expressed per 1000 per year WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of mortality (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: obviate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language