BELTER is a playable word

belter Scrabble® Dictionary

noun
pl. belters
one that belts
36 Playable Words can be made from "BELTER"
   2-Letter Words (6 found)
   3-Letter Words (12 found)
   4-Letter Words (12 found)
   5-Letter Words (4 found)
   6-Letter Words (2 found)