Yes, qis is a Scrabble word!
...and is worth 12 points in Scrabble, and 12 points in Words with Friends
qis
Noun
1. The circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health
What Scrabble words can I make with the letters in qis?
2 Letter Words