CHECKSUMS is a playable word

checksum Scrabble® Dictionary

noun
pl. checksums
a sum derived from bits of computer data
105 Playable Words can be made from "CHECKSUMS"
   2-Letter Words (11 found)
   3-Letter Words (22 found)
   6-Letter Words (8 found)
   7-Letter Words (2 found)
   8-Letter Words (2 found)
   9-Letter Words (1 found)