SKYBOXES is a playable word

skybox Scrabble® Dictionary

noun
pl. skyboxes
an enclosure of seats situated high in a stadium
76 Playable Words can be made from "SKYBOXES"
   2-Letter Words (13 found)
   3-Letter Words (27 found)
   5-Letter Words (8 found)
   6-Letter Words (2 found)
   8-Letter Words (1 found)