KNOCKOFF is a playable word

knockoff Scrabble® Dictionary

noun
pl. knockoffs
a copy that sells for less than the original
23 Playable Words can be made from "KNOCKOFF"
   2-Letter Words (4 found)
   3-Letter Words (8 found)
   4-Letter Words (9 found)
   5-Letter Words (1 found)
   8-Letter Words (1 found)