Is “Mashup” a Scrabble word?
Yes
MASHUP
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 Mashup
/ˈmæʃˌʌp/
noun
1.Something consisting of two or more components combined together.