CHIASMS is a playable word

chiasm Scrabble® Dictionary

noun
pl. chiasms
chiasma
88 Playable Words can be made from "CHIASMS"
   2-Letter Words (12 found)
   3-Letter Words (26 found)
   5-Letter Words (13 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)