/ Thesaurus / I Synonyms of indispensability Find synonyms for: Noun1. indispensability, indispensableness, vitalness, essentiality, essentialnessusage: the quality possessed by something that you cannot possibly do withoutWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language