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noncombustible Synonyms

Another word for noncombustible

Choosing another word for noncombustible depends on context, so the synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Not capable of catching fire and burning under normal conditions.

Usage Example

"The building code requires that the insulation around the furnace be made of incombustible materials."

Strongest
incombustible
nonflammable
fireproof
Strong
flameproof
unburnable
fire-resistant

• noun (Context 2)

A substance or material that does not catch fire or burn easily.

Usage Example

"At the recycling facility, workers separate paper and plastics from noncombustibles like glass and metal."

Strongest
incombustible

Opposites of noncombustible

The opposite of noncombustible shifts depending on context. Common opposites include:

combustible
inflammable
flammable
ignitable
burnable
See all opposites of noncombustible

• Nearby Words

noncombat
noncombatant
noncombative
noncombustible
noncomedogenic
noncommercial
noncommissioned

Cite this Entry

Wordmom. (2026). Synonyms for Noncombustible. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/noncombustible
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