/ Thesaurus / O Synonyms of one time Find synonyms for: Adjective1. erstwhile(prenominal), former(prenominal), old, onetime(prenominal), one-time(prenominal), quondam(prenominal), sometime(prenominal), past (vs. present) (vs. future)usage: belonging to some prior time; "erstwhile friend"; "our former glory"; "the once capital of the state"; "her quondam lover"Adverb1. once, one time, in one caseusage: on one occasion; "once I ran into her"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language