Yes, next is a Scrabble word!
...and is worth 11 points in Scrabble, and 12 points in Words with Friends
next
Adverb
1. At the time or occasion immediately following
Adjective
1. Immediately following in time or order
2. Nearest in space or position; immediately adjoining without intervening space
3. (of elected officers) elected but not yet serving
What Scrabble words can I make with the letters in next?
3 Letter Words
2 Letter Words