Topic summary
Non-flammable

Extracted from the Wikipedia article Combustibility and flammability.
Definitions
The word inflammable may be erroneously thought to mean non-flammable. The erroneous usage of the word inflammable is a significant safety hazard. Therefore, since the 1950s, efforts to use flammable in place of inflammable were accepted by linguists, and it is now the accepted standard in American English and British English. Antonyms of flammable or inflammable include: non-flammable, non-inflammable, incombustible, non-combustible, not flammable, and fireproof.