AUTOBUS is a playable word

autobus Scrabble® Dictionary

noun
pl. autobuses or autobusses
a bus
81 Playable Words can be made from "AUTOBUS"
   2-Letter Words (11 found)
   3-Letter Words (26 found)
   5-Letter Words (12 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)