/ Thesaurus / B Synonyms of base rate Find synonyms for: Noun1. base rate, interest rate, rate of interestusage: the interest rate set by the Bank of England for lending to other banksWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language