Fireproof and Flammable

Opposite meaning words

Fireproof adjective - Incapable of being burned.

Usage example: remember to store valuable papers in a fireproof box

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Flammable is an antonym for fireproof.

Flammable adjective - Capable of catching or being set on fire.

Usage example: avoid wearing loose flammable clothing when using the blowtorch

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Fireproof is an antonym for flammable in topics: combustible, easily set afire.

Cite this Source

Flammable and Fireproof. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/fireproof/flammable

Fireproof & Flammable. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/fireproof/flammable>.

Flammable or Fireproof. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/fireproof/flammable.

Google Ngram Viewer shows how "fireproof" and "flammable" have occurred on timeline