Is “Grandpa” a Scrabble word?
Yes
GRANDPA
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 Grandpa
/ˈɡɹæmpɑː/
noun
1.Grandfather