What term describes a person from another country who is not a naturalized citizen?

The term that describes a person from another country who is not a naturalized citizen is "aliens." In legal contexts, "alien" is specifically used to refer to individuals who are citizens of another nation and who reside in a country where they do not hold citizenship. This term can encompass various categories, such as non-resident aliens, resident aliens, and others, implying that these individuals may have different legal rights and statuses compared to citizens.

The choices provided may lead to some confusion. "Citizen" refers to a person who has been granted citizenship and therefore holds full rights within a country. "Local" could describe someone who lives in a particular area, but it does not inherently indicate citizenship status. While "foreigner" refers to someone from another country, it is a more general term that does not carry the specific legal connotation that "alien" does in immigration contexts. "Aliens" is the most precise term for individuals from another country who have not become naturalized citizens.