Plural of foreigner; people from another country, especially those living in a different country than their own.
From Old French 'forain,' meaning outside or foreign, from Latin 'foris' (outside/door). The '-er' makes it a person.
The concept of 'foreigners' is remarkably recent historically—before nation-states hardened borders in the 1600s-1700s, most people didn't have strong national identities and travelers were simply strangers from another city or region.
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