/ Thesaurus / R Synonyms of r and b Find synonyms for: Noun1. rhythm and blues, R and B, popular music, popular music genre, black music, African-American musicusage: a combination of blues and jazz that was developed in the United States by Black musicians; an important precursor of rock 'n' rollWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language