flame-retardant

adjective

Hard to ignite; not supporting or conveying flame; tending to curtail flames' spread.

“The flame-retardant used on the child's pajamas would keep them from bursting into flame, but it caused a rash.”

Similar
fire-retardantfire-resistantflameproofnoncombustibleincombustible
Opposite
flammable
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectiveflame-retardant (comparative more flame-retardant, superlative most flame-retardant)

comparative more flame-retardant · superlative most flame-retardant · alternative flame retardant

  1. Hard to ignite; not supporting or conveying flame; tending to curtail flames' spread.

    Synonyms: fire-retardant, fire-resistant · Antonyms: flammable

nounflame-retardant (plural flame-retardants)

plural flame-retardants · alternative flame retardant

  1. A substance used to make an object flameproof.

    The flame-retardant used on the child's pajamas would keep them from bursting into flame, but it caused a rash.

Synonyms & antonyms

adjectiveHard to ignite; not supporting or conveying flame; tending to curtail flames' spread.

Similar
fire-retardantfire-resistant
Opposite
flammable

More synonyms by meaning

adjectiveresistant to catching fire

Similar
flameproofnoncombustibleincombustible
Also see
fireprooffire-retardantflameproofincombustiblenoncombustible

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

flame-retardant. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/flame-retardant

MLA

“flame-retardant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/flame-retardant. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “flame-retardant,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/flame-retardant.

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