14
dross(noun, waste, trash, deposit, rubbish)
9
ashes(noun, fire, dust, uncleanness, debris)
9
scoria(noun, debris)
8
ash(brand, residue, calefaction, ashes, cinder)
8
scum(noun, trash, rubbish, uncleanness, remains)
8
soot(calefaction, cinder)
6
dregs(noun, waste, trash, deposit, rubbish)
6
precipitate(noun, waste, trash, deposit, uncleanness)
6
sediment(noun, trash, deposit, rubbish, uncleanness)
5
dust
5
grounds(noun, waste, trash, deposit, uncleanness)
5
cinder(noun, calefaction)
5
clinker(noun, brand)
5
embers(dust, residue, calefaction, ashes, cinder)
5
lees(noun, waste, trash, deposit, rubbish)
4
refuse(noun, debris)
4
residue(noun, part, waste, deposit, remains)
4
deposit(noun, waste, trash, remains, residue)
4
trash(noun, waste, deposit, rubbish, remains)
3
lava(noun, matter, debris)
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APASmart Define. (2015). slag thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/slag/thesaurus/synonyms
ChicagoSmart Define. 2015. "slag thesaurus" https://smartdefine.org/slag/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, slag thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/slag/thesaurus/synonyms>.
MLASmart Define. "slag thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/slag/thesaurus/synonyms>