GRUELED is a playable word

gruel Scrabble® Dictionary

verb
grueled, grueling, gruels or gruelled, gruelling, gruels
to disable by hard work
85 Playable Words can be made from "GRUELED"
   2-Letter Words (5 found)
   3-Letter Words (24 found)
   6-Letter Words (7 found)
   7-Letter Words (2 found)