DEXES is a playable word

dex Scrabble® Dictionary

noun
pl. dexes
a sulfate used as a central nervous system stimulant
16 Playable Words can be made from "DEXES"
   2-Letter Words (4 found)
   3-Letter Words (5 found)
   4-Letter Words (4 found)
   5-Letter Words (3 found)