BUSIER is a playable word

busy Scrabble® Dictionary

adjective
busier, busiest
occupied
verb
busied, busying, busies
to make busy
61 Playable Words can be made from "BUSIER"
   2-Letter Words (8 found)
   3-Letter Words (21 found)
   4-Letter Words (19 found)
   5-Letter Words (9 found)
   6-Letter Words (4 found)