FOULEST is a playable word

foul Scrabble® Dictionary

adjective
fouler, foulest
offensive to the senses
verb
fouled, fouling, fouls
to make foul
116 Playable Words can be made from "FOULEST"
   2-Letter Words (14 found)
   3-Letter Words (31 found)
   6-Letter Words (5 found)
   7-Letter Words (1 found)