Yes, yays is a Scrabble word!
...and is worth 10 points in Scrabble, and 8 points in Words with Friends
yays
Noun
1. A branch of the Tai languages
What Scrabble words can I make with the letters in yays?
3 Letter Words
2 Letter Words
Noun
1. A branch of the Tai languages
3 Letter Words
2 Letter Words