Is “Gainful” a Scrabble word?
Yes
GAINFUL
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 Gainful
adjective
1.Contrary.
2.Disposed to taking advantage of.
3.Troublesome; fractious; hard to handle.