SCUMMER is a playable word

scummer Scrabble® Dictionary

noun
pl. scummers
one that scums
67 Playable Words can be made from "SCUMMER"
   2-Letter Words (9 found)
   3-Letter Words (23 found)
   5-Letter Words (10 found)
   6-Letter Words (2 found)
   7-Letter Words (2 found)