/ Thesaurus / R Synonyms of retarding force Find synonyms for: Noun1. drag, retarding force, resistanceusage: the phenomenon of resistance to motion through a fluidWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abscond Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language