TEXTBOOK is a playable word

textbook Scrabble® Dictionary

noun
pl. textbooks
a book used in the study of a subject
40 Playable Words can be made from "TEXTBOOK"
   2-Letter Words (9 found)
   3-Letter Words (14 found)
   4-Letter Words (13 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)