ZWIEBACK is a playable word

zwieback Scrabble® Dictionary

noun
pl. zwiebacks
a sweetened bread
48 Playable Words can be made from "ZWIEBACK"
   2-Letter Words (12 found)
   3-Letter Words (17 found)
   4-Letter Words (15 found)
   5-Letter Words (3 found)
   8-Letter Words (1 found)