FEEDBACK is a playable word

feedback Scrabble® Dictionary

noun
pl. feedbacks
the return of a portion of the output to the input
77 Playable Words can be made from "FEEDBACK"
   2-Letter Words (12 found)
   3-Letter Words (26 found)
   5-Letter Words (6 found)
   6-Letter Words (6 found)
   8-Letter Words (1 found)