noncombustible

Definitions of noncombustible
1

adj not capable of igniting and burning

Synonyms:
incombustible
fireproof
impervious to damage by fire
fire-resistant, fire-resisting, fire-resistive, fire-retardant
difficult to burn
flame-retardant, flameproof
resistant to catching fire
nonflammable
impossible to ignite
Antonyms:
combustible
capable of igniting and burning
burnable, ignitable, ignitible
capable of burning
comburant, comburent, combustive
supporting combustion
flammable, inflammable
easily ignited
ignescent
can emit sparks or burst into flame
incendiary
capable of catching fire spontaneously or causing fires or burning readily
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