Yes, appal is a Scrabble word!
...and is worth 9 points in Scrabble, and 12 points in Words with Friends
appal
Verb
1. Strike with disgust or revulsion
2. Fill with apprehension or alarm; cause to be unpleasantly surprised
What Scrabble words can I make with the letters in appal?
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words