BOSSER is a playable word

boss Scrabble® Dictionary

verb
bossed, bossing, bosses
to supervise
adjective
bosser, bossest
first-rate, excellent
54 Playable Words can be made from "BOSSER"
   2-Letter Words (9 found)
   3-Letter Words (18 found)
   4-Letter Words (17 found)
   5-Letter Words (7 found)
   6-Letter Words (3 found)