SLOPPING is a playable word

slop Scrabble® Dictionary

verb
slopped, slopping, slops
to spill or splash
127 Playable Words can be made from "SLOPPING"
   2-Letter Words (15 found)
   3-Letter Words (32 found)
   6-Letter Words (10 found)
   7-Letter Words (4 found)
   8-Letter Words (1 found)