Coof is a 4 letter English word. It's valid Scrabble word worth 9 points. It's valid Words with friends word worth 10 points.
You can make 14 anagrams from letters in coof (cfoo).
First recorded in 1715-25; origin uncertain
Then down wi' your haun' o' cairds in a clash on the board, because you've ane ower few, and the coof maun lose his deal!