Is “Toughie” a Scrabble word?
Yes
TOUGHIE
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 Toughie
/ˈtʌfi/
noun
1.Something that is tough, or difficult.
“His question is a toughie. I might have to do some more research.”