/ Thesaurus / U Synonyms of unending Find synonyms for: Adjective1. ageless, aeonian, eonian, eternal, everlasting, perpetual, unending, unceasing, permanent (vs. impermanent), lastingusage: continuing forever or indefinitely; "the ageless themes of love and revenge"; "eternal truths"; "life everlasting"; "hell's perpetual fires"; "the unending bliss of heaven"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language