coauthor

• POS: Noun, Verb (transitive)
• HYPHEN: co=au=thor

CIDE DICTIONARY

coauthor, n. 

 a writer who collaborates with others in writing something.  [WordNet 1.5]

THESAURUS

coauthor

advertising writer, annalist, art critic, author, authoress, belletrist, bibliographer, collaborate, collaborationist, collaborator, columnist, compiler, compose, composer, copywriter, creative writer, critic, dance critic, dash off, diarist, drama critic, dramatist, editorialize, encyclopedist, essayist, formulate, free lance, free-lance, free-lance writer, ghost, ghostwrite, ghostwriter, humorist, indite, inditer, knock off, knock out, literary artist, literary craftsman, literary critic, literary man, litterateur, logographer, magazine writer, man of letters, monographer, music critic, newspaperman, novelettist, novelist, novelize, pamphleteer, penwoman, poet, prepare, produce, prose writer, reviewer, scenario writer, scenarist, scenarize, scribe, scriptwriter, short-story writer, storyteller, technical writer, throw on paper, word painter, wordsmith, write, writer