coauthor

noun

co·​au·​thor (ˌ)kō-ˈȯ-thər 

variants or co-author

plural coauthors or co-authors

: one who collaborates with another person in authoring a literary or dramatic work, a document, a legislative bill, etc.

coauthors of many books and plays

the coauthors of new legislation

coauthor transitive verb

or co-author

coauthored or co-authored; coauthoring or co-authoring

… he coauthored legislation … requiring the publication on the Internet of the cost of all federal contracts, grants, and congressional "earmarks,"…

—Michael Tomasky

a co-authored book

coauthorship

(ˌ)kō-ˈȯ-thər-ˌship 

noun

or co-authorship

… accepting coauthorship on studies to which they did not significantly contribute.

—Mary Murray

Examples of coauthor in a Sentence

Recent Examples on the Web

Though the effects were small, taken together, the findings back up what large population studies have found, said Dagfinn Aune, a coauthor on the meta-analysis. — Amanda Schupak, CNN Money, 15 Sep. 2026

As a legislator, Gipson was the principal coauthor of Senate Constitutional Amendment 4 in 2023, which was sponsored by the Howard Jarvis Taxpayers Association. — The Editorial Board, Oc Register, 30 Aug. 2026

Consider, for example, an analysis of the careers of the top 10 executives in each Fortune 100 firm that my colleague Peter Cappelli published with his coauthors back in 2024. — Matthew Bidwell, Fortune, 28 Aug. 2026

Lechter, the book’s coauthor, says that when she got involved, Kiyosaki had written 600 pages spread across multiple files and floppy disks. — Christopher Cox, Vanity Fair, 26 Aug. 2026

Word History

First Known Use

1827, in the meaning defined above

Rhymes for coauthor

• author

Kids Definition

coauthor

noun

co·​au·​thor

(ˈ)kō-ˈȯ-thər

: an author who works with another author