CODEBOOKS is a playable word

codebook Scrabble® Dictionary

noun
pl. codebooks
a book listing words and their coded equivalents
101 Playable Words can be made from "CODEBOOKS"
   2-Letter Words (11 found)
   3-Letter Words (27 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)