Is “Whacker” a Scrabble word?
Yes
WHACKER
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 Whacker
noun
1.One who, or something which, whacks.
2.Anything large; a whopper.