BOXIEST is a playable word

boxy Scrabble® Dictionary

adjective
boxier, boxiest
resembling a box
(adverb) boxily
78 Playable Words can be made from "BOXIEST"
   2-Letter Words (18 found)
   3-Letter Words (29 found)
   4-Letter Words (18 found)
   5-Letter Words (9 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)