Language reform
Another good example of what language simplification can do is the word flammable. Flammable means that something can catch fire easily. Originally the word was inflammable, from Latin inflammare - put something on fire. In- is also a prefix that can mean the opposite of, like with transparent, intransparent. Today most instructions use flammable rather than inflammable, in order not to confuse people that the in- in this case does not mean the opposite of.