SLUSH is a playable word

slush Scrabble® Dictionary

verb
slushed, slushing, slushes
to splash with slush (partly melted snow)
8 Playable Words can be made from "SLUSH"
   2-Letter Words (3 found)
   3-Letter Words (1 found)
   4-Letter Words (2 found)
   5-Letter Words (2 found)