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

But if you build enough fireproof homes to achieve herd immunity, Mercury can justify insuring more homes — and at cheaper rates.

From Los Angeles Times • Nov. 12, 2025

The system, which teams can make to their individual designs, typically features a liquid such as glycol pumped through a tank of dry ice and through the driver's fireproof top.

From BBC • Oct. 16, 2025

My clothes are fireproof as well, even the thread.

From "The Martian" by Andy Weir