UNMIX is a playable word

unmix Scrabble® Dictionary

verb
unmixed or unmixt, unmixing, unmixes
to separate from a mixture
17 Playable Words can be made from "UNMIX"
   2-Letter Words (8 found)
   3-Letter Words (6 found)
   4-Letter Words (2 found)
   5-Letter Words (1 found)