Talk:Intervention/@comment-83.100.174.82-20140904134746/@comment-173.79.48.202-20160113200534

Fun Fact: "Inflammability" actually means the same thing as "flammability".

The word "inflammable" is the older form, from the same root as "inflame" and "inflammation". "Flammable" is a later introduction (I want to say from 18th or 19th century American English, but I am not certain) to prevent people from making the mistake you just made. Quoting from Wiktionary:

Etymology
From Latin inflammare ‘to set on fire’ + the suffix -able via English inflammable. The in- prefix is dropped to avoid confusion with non-flammable, as in many English words of Latin origin (but not this word) the prefix "in-" and similar means "not".

The word you wanted was "non-flammability".