Is “Fastback” a Scrabble word?
Yes
FASTBACK
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 Fastback
noun
1.A motor car having a continuous slope from the roof to the rear