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Definition of unburnable
unburnable
/ˌʌnˈbɜːrnəbəl/
un · burn · a · ble
unburnable Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Rare
Syllables
4
unburnable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Incapable of catching fire or being consumed by combustion; fireproof.
Example
"The municipal waste facility separates unburnable items, such as glass and metal, from combustible household trash."
2
Designating fossil fuel reserves that cannot be extracted and burned if global warming is to be kept within internationally agreed temperature limits.
Example
"Climate economists warn that a large proportion of proven coal and oil reserves must be treated as unburnable carbon."
Synonyms
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Cite this Entry
Wordmom. (2026). Definition of Unburnable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/unburnable