UNFAITH is a playable word

unfaith Scrabble® Dictionary

noun
pl. unfaiths
lack of faith
71 Playable Words can be made from "UNFAITH"
   2-Letter Words (17 found)
   3-Letter Words (28 found)
   4-Letter Words (19 found)
   5-Letter Words (6 found)
   7-Letter Words (1 found)