Yes, juju is a Scrabble word!
...and is worth 18 points in Scrabble, and 24 points in Words with Friends
juju
Noun
1. The power associated with a juju
2. A charm superstitiously believed to embody magical powers
What Scrabble words can I make with the letters in juju?
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Words that can be created with an extra letter added to juju:
S:jujus