PEEKABOOS is a playable word

peekaboo Scrabble® Dictionary

noun
pl. peekaboos
a children's game
160 Playable Words can be made from "PEEKABOOS"
   2-Letter Words (16 found)
   6-Letter Words (3 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)