Yes, zippier is a Scrabble word!
...and is worth 20 points in Scrabble, and 22 points in Words with Friends
zippier
Adjective
1. Quick and energetic
2. Marked by lively action
What Scrabble words can I make with the letters in zippier?
6 Letter Words
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words