FUSTIEST is a playable word

fusty Scrabble® Dictionary

adjective
fustier, fustiest
musty
(adverb) fustily
94 Playable Words can be made from "FUSTIEST"
   2-Letter Words (12 found)
   3-Letter Words (27 found)
   6-Letter Words (4 found)
   8-Letter Words (1 found)