ghostwrote
/ˈɡoʊstoʊɪt/Definitions
1. verb
to write (a book, article, or speech) on behalf of another person, often without receiving public credit for the work
“The novelist ghostwrote the autobiography of the famous actress.”
2. noun
a book, article, or speech that has been written on behalf of another person
“The bestselling novel was later revealed to be a ghostwrite of an inexperienced author.”