4
waste(noun, refuse, trash, rubbish, layer)
3
cinder
3
dreg(noun, group, rich, over)
3
dregs of society(expression, idiom, commonalty)
3
dust(noun, waste, trash, dump, garbage)
3
filings(noun, residue)
3
garbage(noun, waste, refuse, rest, trash)
3
grime(noun, stain, pollution, corruption, contamination)
3
gunk(mess, grease, mud, muck, goo)
3
hogwash(noun, waste, trash, dump, uncleanness)
3
hoi polloi
3
leavings(noun, waste, refuse, rest, trash)
3
membrane(noun, covering, fold, coat, cloud)
3
mire(mess, grease, mud, muck, goo)
3
mud(noun, mess, grease, muck, goo)
3
nun's folded veil
3
ooze(mess, grease, mud, muck, goo)
3
riff-raff
3
scoria
3
slob(degenerate, dip)
11 years ago|9.3k views|share |citing 
APASmart Define. (2015). scum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/scum/thesaurus/synonyms
ChicagoSmart Define. 2015. "scum thesaurus" https://smartdefine.org/scum/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, scum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/scum/thesaurus/synonyms>.
MLASmart Define. "scum thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/scum/thesaurus/synonyms>