Is “Authorial” a Scrabble word?
Yes
AUTHORIAL
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Authorial
adjective
1.Of, coming from, or typical of an author (especially of books).
Synonyms: auctorial, autorial