BOSSIEST is a playable word

bossy Scrabble® Dictionary

adjective
bossier, bossiest
domineering
(adverb) bossily
noun
pl. bossies
a cow
86 Playable Words can be made from "BOSSIEST"
   2-Letter Words (15 found)
   3-Letter Words (26 found)
   5-Letter Words (11 found)
   6-Letter Words (7 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)