WORKBOOK is a playable word

workbook Scrabble® Dictionary

noun
pl. workbooks
an exercise book for a student
28 Playable Words can be made from "WORKBOOK"
   2-Letter Words (5 found)
   3-Letter Words (11 found)
   4-Letter Words (9 found)
   5-Letter Words (1 found)
   8-Letter Words (2 found)