Is “Helluva” a Scrabble word?
Yes
HELLUVA
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 Helluva
/ˈhɛləvə/
adjective
1.(A) hell of a; extreme.
“They had a helluva row over where to spend the weekend.”