UNIFILAR is a playable word

unifilar Scrabble® Dictionary

adjective
having only one thread, wire, or fiber
88 Playable Words can be made from "UNIFILAR"
   2-Letter Words (12 found)
   3-Letter Words (25 found)
   5-Letter Words (10 found)
   6-Letter Words (4 found)
   8-Letter Words (1 found)