Fireproof
Fireproof adjective - Incapable of being burned.
Mutual synonyms
Both words in one sentence
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Justified in that said catsuits are resistant to mundane blades (non-adamantium or energy blades, etc.), fireproof, and insulate the wearer from electrical shocks and extremes of heat and cold.
Source: Spy Catsuit
Cite this Source
Insulate and Fireproof. (2016). Retrieved 2026, August 12, from https://thesaurus.plus/related/fireproof/insulate
Fireproof & Insulate. N.p., 2016. Web. 12 Aug. 2026. <https://thesaurus.plus/related/fireproof/insulate>.
Insulate or Fireproof. 2016. Accessed August 12, 2026. https://thesaurus.plus/related/fireproof/insulate.
Google Ngram Viewer shows how "fireproof" and "insulate" have occurred on timeline