/ Thesaurus / E Synonyms of extemporarily Find synonyms for: Adverb1. extemporaneously, extemporarily, extemporeusage: without prior preparation; "he spoke extemporaneously"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language