DEMENT is a playable word

dement Scrabble® Dictionary

verb
demented, dementing, dements
to make insane
38 Playable Words can be made from "DEMENT"
   2-Letter Words (8 found)
   3-Letter Words (12 found)
   4-Letter Words (15 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)