Definitions

1. noun

A title given to something in error or in confusion, especially a title of a book, film, or other work.

“The movie ‘The Mistitle’ was often confused with the classic film ‘The Mist’.”

2. verb

To give a wrong or confusing title to something, especially a title of a book, film, or other work.

“The editor mistitled the new novel, causing confusion among readers.”