OUTBOX is a playable word

outbox Scrabble® Dictionary

verb
outboxed, outboxing, outboxes
to surpass in boxing
19 Playable Words can be made from "OUTBOX"
   2-Letter Words (5 found)
   3-Letter Words (10 found)
   4-Letter Words (2 found)
   5-Letter Words (1 found)
   6-Letter Words (1 found)