Can any noun ending in -ism describing some system or belief be changed for -ist to describe a member of that system?
My question might be confusing, so I will run through a few examples:
Nihilism => nihilist Feminism => feminist Racism => racist
This seems to follow a pretty predictable pattern. So, when I learned a new word a while ago - misoneism (having a fear or hatred of innovation or change) - I was expecting to be able to call someone a misoneist, if it ever came to that.
Unfortunately, while most dictionaries (online and paper) I have checked so far contain the word misoneism they do not contain the word misoneist. Were my assumptions correct that you can create any -ist noun from a root of -ism, or is this word in the dictionary because it really doesn't exist?