SUMLESS is a playable word

sumless Scrabble® Dictionary

adjective
too large for calculation
48 Playable Words can be made from "SUMLESS"
   2-Letter Words (7 found)
   3-Letter Words (15 found)
   4-Letter Words (17 found)
   5-Letter Words (5 found)
   6-Letter Words (2 found)
   7-Letter Words (2 found)