SYSTEM is a playable word

system Scrabble® Dictionary

noun
pl. systems
a group of interacting elements forming a unified whole
28 Playable Words can be made from "SYSTEM"
   2-Letter Words (7 found)
   3-Letter Words (10 found)
   4-Letter Words (7 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)