Formal:
* Foreign: This is the most general and neutral term.
* International: This implies a broader scope beyond simply being from another country.
* Non-native: This term emphasizes the individual's origin not being the place they are currently in.
Informal:
* Foreigner: This is more common in everyday language and can sometimes have negative connotations, depending on the context.
* Ex-pat: This term refers to someone living outside their native country, often for extended periods.
* From [Country name]: This is the most direct and usually preferred way to describe someone's origin. For example, "She's from Italy," or "He's a Brazilian citizen."
Other:
* Alien: This term usually refers to someone from a different planet, but it can be used informally to refer to someone from a very different culture.
* Visitor: This term is appropriate for someone who is temporarily visiting a country.
* Immigrant: This term refers to someone who has permanently moved to a country other than their native one.
The best term to use will depend on the specific context and your intended meaning. It's always important to be mindful of potential connotations and to use language that is respectful and inclusive.