OVERBOOKED is a playable word

overbook Scrabble® Dictionary

verb
overbooked, overbooking, overbooks
to issue reservations in excess of the space available
121 Playable Words can be made from "OVERBOOKED"
   2-Letter Words (11 found)
   3-Letter Words (31 found)
   7-Letter Words (3 found)
   8-Letter Words (2 found)
   10-Letter Words (1 found)