noncombustible
adjective
non·com·bus·ti·ble ˌnän-kəm-ˈbə-stə-bəl 
: incapable of igniting and burning when subjected to fire : not combustible
noncombustible materials
drums of noncombustible waste
Synonyms
- fireproof
- incombustible
- nonflammable
- noninflammable
See all Synonyms & Antonyms 
Word History
First Known Use
1827, in the meaning defined above
noncombustible
adjective
as in incombustible
incapable of being burned firefighting gear is made of noncombustible material Synonyms & Similar Words
Relevance
- incombustible
- nonflammable
- fireproof
- noninflammable
- nonexplosive
Antonyms & Near Antonyms
- combustible
- flammable
- inflammable
- ignitable
- burnable
- lighted
- ignitible
- burning
- lit
- fiery
- flaming
- ignited
- inflamed
- explosive
- aflame
- kindled
- volcanic
- blazing
- consumable
- combusting
- incendiary
- afire
- enflamed
- ablaze