Is “Grumped” a Scrabble word?
Yes
GRUMPED
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 Grumped
/ɡɹʌmpt/
verb
1.To complain.
2.To be grumpy.