/ Thesaurus / E Synonyms of expeditiousness Find synonyms for: Noun1. dispatch, despatch, expedition, expeditiousness, celerity, quickness, rapidity, rapidness, speedinessusage: the property of being prompt and efficient; "it was done with dispatch"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: torrid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language