Is “Quack” a Scrabble word?
Yes
QUACK
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 Quack
/kwæk/
noun
1.The sound made by a duck.
“Did you hear that duck make a quack?”
verb
1.To make a noise like a duck.
“Do you hear the ducks quack?”