ghostwriter
🇺🇸
/ˈɡəʊstraɪtər/
🇬🇧
/ˈɡəʊstraɪtə(r)/
A person who writes for someone else, but the other person gets the credit for the work.
The politician hired a ghostwriter to pen his autobiography.
政治家は自伝を書くためのゴーストライターを雇いました。