Yes, gummer is a Scrabble word!
...and is worth 11 points in Scrabble, and 15 points in Words with Friends
Gummer is a valid Scrabble word.
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What Scrabble words can I make with the letters in gummer?
Words that can be created with an extra letter added to gummer:
There are 6 words that can be made by adding another letter to 'gummer'.