RUDIST is a playable word

rudist Scrabble® Dictionary

noun
pl. rudists
a cone-shaped extinct mollusk
39 Playable Words can be made from "RUDIST"
   2-Letter Words (7 found)
   3-Letter Words (14 found)
   4-Letter Words (13 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)