adj · verb · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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CMU ARPABET:F AY1 ER0 P R UW2 F
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Resistant to damage from fire.
Definition source: English Wiktionary via Wiktextract
Examples
The fireproof safe will protect documents inside for up to four hours in a standard house fire.
Definition source: English Wiktionary via Wiktextract
Examples
I hastily fireproofed my clothing somewhat by pouring a bucket of water over myself before dashing into the flames.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adjective satellite
Meaning 3
impervious to damage by fire
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
verb
Meaning 4
make resistant to fire
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: proof
History
Etymology
Etymology tree Proto-Indo-European *péh2wr̥ Proto-Germanic *fōr Proto-West Germanic *fuir Old English fȳr Middle English fyr English fire English proof English -proof English fireproof From fire + -proof.
Across languages
Translations
40 source translations are retained for this English entry.
Bulgarian:
огнеупорен
(ogneuporen)
— resistant to damage from fire
Catalan:
ignífug
— resistant to damage from fire
Chinese Mandarin:
耐火的
(nàihuǒ de)
— resistant to damage from fire
Chinese Mandarin:
防火的
(fánghuǒ de)
— resistant to damage from fire
Czech:
ohnivzdorný
— resistant to damage from fire
Danish:
brandsikker
— resistant to damage from fire
Esperanto:
nebrula
— resistant to damage from fire
Finnish:
tulenkestävä
— resistant to damage from fire
French:
ignifuge
— resistant to damage from fire
German:
feuerfest
— resistant to damage from fire
Greek:
πυρίμαχος m αλεξίπυρος
(pyrímachos)
— resistant to damage from fire
Hungarian:
tűzálló
— resistant to damage from fire
Irish:
dódhíonach
— resistant to damage from fire
Irish:
lasairdhíonach
— resistant to damage from fire
Irish:
tinedhíonach
— resistant to damage from fire
Italian:
ignifugo
— resistant to damage from fire
Japanese:
耐火性の
(taikasei no)
— resistant to damage from fire
Macedonian:
огноо́тпорен
(ognoótporen)
— resistant to damage from fire
Malay:
kalis api
— resistant to damage from fire
Māori:
ārai ahi
— resistant to damage from fire
Norwegian Bokmål:
brannsikker
— resistant to damage from fire
Norwegian Bokmål:
ildfast
— resistant to damage from fire
Norwegian Nynorsk:
brannsikker
— resistant to damage from fire
Persian:
نسوز
— resistant to damage from fire
Polish:
niepalny
— resistant to damage from fire
Polish:
ognioodporny
— resistant to damage from fire
Polish:
ogniotrwały
— resistant to damage from fire
Polish:
przeciwogniowy
— resistant to damage from fire
Polish:
żaroodporny
— resistant to damage from fire
Portuguese:
à prova de fogo
— resistant to damage from fire
Romanian:
rezistent la daune de la foc
— resistant to damage from fire
Romanian:
ignifug
— resistant to damage from fire
Russian:
огнеупо́рный
(ogneupórnyj)
— resistant to damage from fire
Russian:
несгора́емый
(nesgorájemyj)
— resistant to damage from fire
Serbo-Croatian:
vatrootporan
— resistant to damage from fire
Serbo-Croatian:
nezapaljiv
— resistant to damage from fire
Serbo-Croatian:
vatrostalan
— resistant to damage from fire
Spanish:
ignífugo
— resistant to damage from fire
Uyghur:
يانماس
(yanmas)
— resistant to damage from fire
Uyghur:
ئوت ئالماس
— resistant to damage from fire