fireproof

[fahyuhr-proof] / ˈfaɪərˌpruf /

ADJECTIVE

resistant to burning

Synonyms

STRONG

concrete

WEAK

asbestos fire-resistant incombustible noncandescent noncombustible nonflammable noninflammable

Antonyms

WEAK

waterproof

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Ukrainian president is the same as ever—steadfast, with a nervous system that seems fireproof and capable of withstanding anything.

From The Wall Street Journal • Mar. 18, 2026

His insurance should cover most of the rebuild, which includes pricey fireproof features.

From The Wall Street Journal • Jan. 6, 2026

Mesh material and plastic sheets which were found on the outside of the buildings are not believed to be fireproof, while polystyrene was also found on the buildings' windows.

From BBC • Nov. 27, 2025

But if a house is fireproof, it can act as a shield for the vulnerable wood homes behind it.

From Los Angeles Times • Nov. 12, 2025

It was, in all respects, one of the most absolutely fireproof buildings ever erected.

From "The Great Fire" by Jim Murphy