retardant

R1E1T1A1R1D2A1N1T1

adjective

Serving to impede (slow down) the action of something

Similar
retardentretardation
Less commonScrabble 10

Meanings

adjectiveretardant (comparative more retardant, superlative most retardant)

comparative more retardant · superlative most retardant

  1. in compoundsoftenServing to impede (slow down) the action of something
nounretardant (plural retardants)

plural retardants

  1. in compoundsoftenSomething that serves to retard (slow down) the action of something.

    It took until last year for mattresses and furniture containing the highly toxic retardant deca-BDE to be banned, under European law, from sale. […] To make matters worse, far from saving us from fires, flame retardants appear to increase the risk.

    2020 February 26, George Monbiot, “Toxic sofas are a secret scandal – and an ‘EU red tape’ bonfire will make it worse”, in The Guardian

Synonyms & antonyms

nounany agent that retards or delays or hinders

Similar
retardentretardation
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Frenchretardant
  2. Englishretardant

Borrowed from French retardant, equivalent to retard (“to slow down”) + -ant.

Full word history & related roots →

Translations

Bulgarian забавящ, спъващ
  • забавящ (zabavjašt)Translations
  • спъващ (spăvašt)Translations
Swedish hämmare, skyddsmedel
  • hämmareTranslations
  • skyddsmedelTranslations
Cite this entry
APA

retardant. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/retardant

MLA

“retardant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/retardant. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “retardant,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/retardant.

Source: retardant on Wiktionary, CC BY-SA 4.0.