CUBOIDS is a playable word

cuboid Scrabble® Dictionary

noun
pl. cuboids
a bone of the foot
(adjective) cuboidal
68 Playable Words can be made from "CUBOIDS"
   2-Letter Words (11 found)
   3-Letter Words (32 found)
   4-Letter Words (19 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)