BITSIER is a playable word

bitsy Scrabble® Dictionary

adjective
bitsier, bitsiest
tiny
79 Playable Words can be made from "BITSIER"
   2-Letter Words (11 found)
   3-Letter Words (23 found)
   5-Letter Words (13 found)
   6-Letter Words (5 found)
   7-Letter Words (1 found)