slag

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. Waste material from a [[mine]].
2. [[scum|Scum]] that forms on the surface of [[molten]] [[metal]].
3. [[impurity|Impurities]] formed and separated out when a metal is [[smelt]]ed from [[ore]]; [[vitrify|vitrified]] [[cinder]]s.
4. Hard [[aggregate]] remaining as a [[residue]] from [[blast furnace]]s, sometimes used as a [[surfacing]] material.
5. [[scoria|Scoria]] associated with a [[volcano]].
6. {{lb|en|UK|Irish|Australian|slang|derogatory}} A [[prostitute]] or promiscuous woman; a [[slut]].
7. {{lb|en|UK|Irish|pejorative|dated}} A [[coward]].
8. {{lb|en|UK|Irish|chiefly|Cockney|pejorative}} A contemptible person, a [[scumbag]].

Verb

1. {{lb|en|transitive}} To produce [[#Noun|slag]].
2. {{lb|en|intransitive}} To become [[#Noun|slag]]; to [[agglomerate]] when heated below the [[fusion]] point.
3. {{lb|en|transitive}} To reduce to [[#Noun|slag]].
4. {{lb|en|transitive|UK|slang}} To talk [[badly]] about; to [[malign]] or [[denigrate]] (someone).
5. {{lb|en|transitive|Ireland|slang}} To [[make fun of]]; to [[take the piss]] {{gl|[[tease]], [[ridicule]] or [[mock]]}}.
6. {{lb|en|intransitive|Australia|slang}} To [[spit]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.