Yes, ut is a Scrabble word!
...and is worth 2 points in Scrabble, and 3 points in Words with Friends
ut
Noun
1. The local time at the 0 meridian passing through Greenwich, England; it is the same everywhere
2. A state in the western United States; settled in 1847 by Mormons led by Brigham Young
3. The syllable naming the first (tonic) note of any major scale in solmization