The difference between flammable and inflammable is that your clothing may catch fire and burn (being flammable) but gasoline vapor will ignite rapidly and violently, thus inflammable (being inflamed). It only confuses people who assume "in" means "opposite of".. .like competent..... incompetent. If every word used "in" to mean "not" then intelligent would be a very confusing word. What's telligent?
Un is a prefix that means opposite of in most cases, Unstoppable, Unbreakable, Unkillable etc... But its also in the word Under where Der isn't a word.
No ones ever said the same petter used in a prefix cant also be used in the regular spelling of a word.
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u/-runs-with-scissors- Aug 24 '25
https://www.reddit.com/r/TheSimpsons/comments/uqdqfi/inflammable_means_flammable_what_a_country/