ghostwriter
noun
- writer who writes speeches or texts in the name and commissioned by another person
Wiktionary
noun
Etymology: From ghost + writer.
- 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.”
“Ghostwriters, typically the faceless forces behind many books by famous non-writers, are now becoming more visible, with celebrities openly teaming up with high-profile professionals.”