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Incombustible has 9 synonyms. The top synonyms for incombustible are flame-retardant, noncombustible, fire-retardant, fire-resistive, fire-resisting, fire-resistant, nonflammable, flameproof and 1 more. Browse the full list below.
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| Random | DefinitionA common synonym for incombustible is flame-retardant. Other synonyms include noncombustible, fire-retardant, fire-resistive, fire-resisting.
Incombustible has 9 synonyms listed on Thesaurasize.
°Not capable of catching fire and burning; not flammable.
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