Synonyms|33Antonyms|27|Broader|2Narrower|0Related|62
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fire door(expression, idiom, insulation, fire extinction)
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fire proof(expression, idiom)
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fire retardant(expression, idiom, insulation, fire extinction)
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fire wall(expression, idiom, insulation, fire extinction)
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flame-proof
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flame retardant(expression, idiom, insulation, fire extinction)
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incombustible material(expression, idiom, insulation, fire extinction)
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inflammable
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infusible
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non flammable(expression, idiom)
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noncombustible material(expression, idiom, insulation, fire extinction)
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not combustible(expression, idiom)
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unflammable(insulation, fire extinction)
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APASmart Define. (2015). incombustible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/incombustible/thesaurus/synonyms
ChicagoSmart Define. 2015. "incombustible thesaurus" https://smartdefine.org/incombustible/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, incombustible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/incombustible/thesaurus/synonyms>.
MLASmart Define. "incombustible thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/incombustible/thesaurus/synonyms>