Breadcrumb Home > Thesaurus > I Synonyms of infirmity Find synonyms for: Noun 1. infirmity, frailty, debility, feebleness, frailness, valetudinarianism, unfitness, softness usage: the state of being weak in health or body (especially from old age) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of infirmity (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: jactation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language