DIERETIC is a playable word

dieresis Scrabble® Dictionary

noun
pl. diereses
the separation of two vowels into two syllables
(adjective) dieretic
107 Playable Words can be made from "DIERETIC"
   2-Letter Words (9 found)
   3-Letter Words (18 found)
   7-Letter Words (4 found)
   8-Letter Words (1 found)