/ Thesaurus / I Synonyms of inflation rate Find synonyms for: Noun1. inflation rate, rate of inflation, rateusage: the rate of change of prices (as indicated by a price index) calculated on a monthly or annual basisWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language