Is “Duff” a Scrabble word?
Yes
DUFF
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 Duff
/dʌf/
noun
1.Dough.
2.A stiff flour pudding, often with dried fruit, boiled in a cloth bag, or steamed.
3.A pudding-style dessert, especially one made with plums.