SCUMS is a playable word

scum Scrabble® Dictionary

verb
scummed, scumming, scums
to remove the scum (impure or extraneous matter) from
13 Playable Words can be made from "SCUMS"
   2-Letter Words (3 found)
   3-Letter Words (5 found)
   4-Letter Words (4 found)
   5-Letter Words (1 found)