| incombustible(adjective, resistant, insulation, fire extinction, nonflammable) | |
| fire-resistant(adjective, resistant) | |
| nonflammable(adjective, resistant, insulation, fire extinction) | |
| noninflammable(adjective, resistant) | |
| flameproof(adjective, insulation, fire extinction) | |
| concrete(adjective, resistant) | |
| noncandescent(adjective, resistant) | |
| asbestos(adjective, resistant) | |
| fire-retardant | |
| noncombustible(adjective, resistant) | |
| strong | |
| waterproof | |
| weatherproof | |
| non-flammable | |
| airtight | |
| ballproof | |
| bombproof | |
| bulletproof | |
| burglarproof | |
| corrosionproof |
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| APA | Smart Define. (2015). fireproof thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fireproof/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fireproof thesaurus" https://smartdefine.org/fireproof/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, fireproof thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fireproof/thesaurus/synonyms>. |
| MLA | Smart Define. "fireproof thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/fireproof/thesaurus/synonyms> |