Synonyms|68Antonyms|31|Broader|1Narrower|0Related|50
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flame-resistant(adjective, incombustible)
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heavy-duty
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infusible
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irresistible
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non-combustible
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non-inflammable
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non flammable(expression, idiom)
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physical
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APASmart Define. (2015). fireproof thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fireproof/thesaurus/synonyms
ChicagoSmart Define. 2015. "fireproof thesaurus" https://smartdefine.org/fireproof/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, fireproof thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fireproof/thesaurus/synonyms>.
MLASmart Define. "fireproof thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/fireproof/thesaurus/synonyms>