Yes, misusing is a Scrabble word!
...and is worth 11 points in Scrabble, and 15 points in Words with Friends
misusing
Verb
1. Apply to a wrong thing or person; apply badly or incorrectly
2. Change the inherent purpose or function of something
What Scrabble words can I make with the letters in misusing?
7 Letter Words
6 Letter Words
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words