Breadcrumb Home > Thesaurus > P Synonyms of permanence Find synonyms for: Noun1. permanence, permanency, duration, lengthusage: the property of being able to exist for an indefinite durationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of permanence (Dictionary) ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language