Is “Coauthor” a Scrabble word?
Yes
COAUTHOR
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 Coauthor
noun
1.An author who collaborates with another to write something.
verb
1.To write something in collaboration with another author.