/ Thesaurus / C Synonyms of co author Find synonyms for: Noun1. coauthor, joint author, writer, authorusage: a writer who collaborates with others in writing somethingVerb1. co-author, authorusage: be a co-author on (a book, a paper)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language