Yes, mix is a Scrabble word!
...and is worth 12 points in Scrabble, and 13 points in Words with Friends
mix
Verb
1. Mix together different elements
2. Open (a place) to members of all races and ethnic groups
3. Combine (electronic signals)
4. Add as an additional element or part
5. To bring or combine together or with something else
6. Mix so as to make a random order or arrangement
Noun
1. A commercially prepared mixture of dry ingredients
2. An event that combines things in a mixture
3. The act of mixing together
What Scrabble words can I make with the letters in mix?
2 Letter Words