As adjectives the difference between authorial and nonauthorial
is that authorial is of, coming from, or typical of an author (especially of books) while nonauthorial is not authorial.
authorial
English
Adjective
(head)
of, coming from, or typical of an author (especially of books)
Synonyms
* autorial
* auctorial
Derived terms
* authorial intention
* authorial intentionality