/ Thesaurus / R Synonyms of reference book Find synonyms for: Noun1. reference book, reference, reference work, book of facts, bookusage: a book to which you can refer for authoritative facts; "he contributed articles to the basic reference work on that topic"WordNet 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