MATTER is a playable word

matter Scrabble® Dictionary

verb
mattered, mattering, matters
to be of importance
63 Playable Words can be made from "MATTER"
   2-Letter Words (12 found)
   3-Letter Words (23 found)
   4-Letter Words (19 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)