noninflammable
adjective
non·in·flam·ma·ble ˌnän-in-ˈfla-mə-bəl 
: not inflammable : nonflammable
… one of the very first airships to use noninflammable helium.
Bob Marcotte
Bob Marcottea noninflammable solvent
Synonyms
- fireproof
- incombustible
- noncombustible
- nonflammable
See all Synonyms & Antonyms 
Word History
First Known Use
1817, in the meaning defined above
noninflammable
adjective
as in nonflammable
incapable of being burned noninflammable materials used for construction of the interior of the nightclub Synonyms & Similar Words
Relevance
- nonflammable
- noncombustible
- incombustible
- fireproof
- nonexplosive
Antonyms & Near Antonyms
- ignitible
- inflammable
- flammable
- combustible
- burnable
- lighted
- ignitable
- inflamed
- burning
- fiery
- lit
- ignited
- flaming
- aflame
- explosive
- kindled
- blazing
- volcanic
- consumable
- enflamed
- incendiary
- combusting
- afire
- ablaze