as in noncombustible
incapable of being burned
we keep our important papers in an incombustible safe in the basement
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Recent Examples of incombustible
The Tribune claimed its four-story building constructed of stone, brick and iron at the southeast corner of Dearborn and Madison streets was incombustible.
—
Chicago Tribune Staff, Chicago Tribune, 22 May 2022
The Chicago Tribune claimed its four-story building constructed of stone, brick and iron at the southeast corner of Dearborn and Madison streets was incombustible.
—Kori Rumore, chicagotribune.com, 1 Oct. 2021
In October, scientists announced a new prototype of a lithium-ion battery that’s flexible and incombustible, eliminating in one fell swoop two of the biggest safety complaints about these batteries.
—Caroline Delbert, Popular Mechanics, 2 Dec. 2019
Omnis said combustible Reynobond PE material was safe to use on high rise buildings if the insultation material usually put behind the panels was made of incombustible material such as mineral fibre.
—Reuters, Fortune, 26 June 2017
Chicago Tribune Staff, Chicago Tribune, 22 May 2022
The Chicago Tribune claimed its four-story building constructed of stone, brick and iron at the southeast corner of Dearborn and Madison streets was incombustible.
—Kori Rumore, chicagotribune.com, 1 Oct. 2021
In October, scientists announced a new prototype of a lithium-ion battery that’s flexible and incombustible, eliminating in one fell swoop two of the biggest safety complaints about these batteries.
—Caroline Delbert, Popular Mechanics, 2 Dec. 2019
Omnis said combustible Reynobond PE material was safe to use on high rise buildings if the insultation material usually put behind the panels was made of incombustible material such as mineral fibre.
—Reuters, Fortune, 26 June 2017
Recent Examples of Synonyms for incombustible
Adjective
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Items mentioned in the ban include noncombustible products which can be chewed, absorbed, dissolved or ingested by other means.—
Dana Afana,
Freep.com,
22 Oct. 2025
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Among them: Remove weeds, brush, and other invasive vegetation and debris, and use noncombustible rock mulch around your home in place of standard mulch.—
Andrea Riquier,
USA Today,
3 Oct. 2025
Adjective
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Was there something special about them—a fireproof roof, say, or a fancy sprinkler system?—
Ingfei Chen,
New Yorker,
22 Oct. 2025
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Renderings submitted with the application show some cosmetic changes to the townhouse façades, including a stoop removed for ADA compliance, new (seemingly code-compliant) double glass doors, and fireproof concrete siding in lieu of wood.—
Kim Velsey,
Curbed,
20 Oct. 2025
Adjective
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The second was to build what amounts to a nonflammable moat around a home to prevent embers from alighting on anything next to a house that could burn and ignite the structure.—
Bloomberg,
Mercury News,
12 Aug. 2025
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Keep vehicles off dry grass Properly discard cigarettes or anything flammable (think ashtrays or a nonflammable container, not the ground, and fully snuffed out) The air quality, however, is not dangerous, according to AirNow, which reports the official U.S. air quality.—
Nicole Villalpando,
Austin American Statesman,
2 July 2025
Cite this Entry
“Incombustible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/incombustible. Accessed 31 Oct. 2025.
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