A literary adviser or editor in a theater, opera, or film company that researches, selects, adapts, edits, and interprets scripts, libretti, texts, and printed programs (or helps others with these tasks), consults with authors, and does public relations work.
Someone who writes or adapts theater plays, a playwright, dramatist, especially one connected with a specific theater or company.
To act as a dramaturge.
A professional writer who is paid to write material that is officially credited to another person; one who writes on behalf of someone else, often for a celebrity.
Smith was listed as the author of his autobiography, but a ghostwriter did most of the work.