Common prefixes:
* Citi-: This is the most common prefix used in words like "citizenry" and "citified."
* Cit-: This prefix is sometimes used, but it's less common than "citi-."
Less common prefixes:
* Civ-: This prefix is used in words like "civilization" and "civic," but it doesn't directly refer to citizenship.
* Pop-: This prefix is used in words like "population" and "populace," but it refers to the general public rather than specifically citizens.
Ultimately, the best prefix to use depends on the specific word you're trying to create.
For example, if you're talking about the group of people who are citizens, "citizenry" would be the most appropriate word. If you're talking about someone who is not a citizen, you could use "non-citizen" or "alien."