Meaning & use

fireproof

adjective, verb·Everyday

Last updated

UK/ˈfaɪəpruːf/
US/ˈfaɪərpruːf/

Meanings

  1. adjectivenot comparable

    Made or treated so that fire cannot burn or damage it.

    Grammar: Usually not compared; say 'more fireproof' only when comparing treatments, not 'fireproofer'.

    Patterns

    • fireproof material
    • make something fireproof
    • fireproof safe

    The curtains are made of fireproof material.

    Keep your passport in a fireproof safe.

    All the documents were stored in a fireproof cabinet.

  2. verbtransitive

    To treat a material or object so that it resists fire.

    Grammar: Takes an object: fireproof the tent. Often used in the passive: the wood was fireproofed.

    Patterns

    • fireproof something
    • be fireproofed

    They fireproofed the wooden roof before the dry season.

    The fabric is fireproofed during production.

    Workers fireproof the stage curtains every year.

Word forms

third person singularfireproofs
past tensefireproofed
past participlefireproofed
-ing formfireproofing

Common combinations

fireproof material
The walls are covered with fireproof material.
fireproof safe
She keeps her jewelry in a fireproof safe.
make something fireproof
A special coating makes the wood fireproof.
fireproof clothing
Firefighters wear fireproof clothing.

Synonyms and how they differ

flameproof
Flameproof is close in meaning but often used for materials that resist flames for a short time, while fireproof suggests stronger protection.
fire-resistant
Fire-resistant means it resists fire but may still be damaged; fireproof suggests it cannot burn at all.

Opposites

Word family

fireproofing noun
The process or material used to make something resist fire.

Commonly confused: fireproof or foolproof?

fireproof vs foolproof

Foolproof means so simple that no one can make a mistake; fireproof means protected against fire.

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