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Definition of fireproof
fireproof
/ˈfaɪ.ɚˌpruːf/
fire · proof
Past Simple:fireproofed
•Past Participle:fireproofed
•Present Participle:fireproofing
fireproof Lexical Profile
CEFR
B2
Grade
6
Tier
2
Usage
Top 10k
Syllables
3
fireproof Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Able to withstand fire or great heat; made of or treated with material that does not catch fire or burn easily.
Example
"The historical archives are stored in a fireproof vault in the basement of the library."
Synonyms
View all synonyms for fireproof Antonyms
View all antonyms for fireproof• verb
1
To make a building, material, or object resistant to fire or extreme heat, typically by treating or coating it with nonflammable substances.
Example
"Contractors were hired to fireproof the structural steel beams before installing the ceiling panels."
Synonyms
View all synonyms for fireproof• Nearby Words
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Fireproof. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fireproof