UNFIXING is a playable word

unfix Scrabble® Dictionary

verb
unfixed or unfixt, unfixing, unfixes
to unfasten
28 Playable Words can be made from "UNFIXING"
   2-Letter Words (7 found)
   3-Letter Words (14 found)
   5-Letter Words (3 found)
   6-Letter Words (3 found)
   8-Letter Words (1 found)