Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign; as, alien subjects, enemies, property, shores.(adjective)
source: webster1913
noun (n)
a person who comes from a foreign country; someone who does not owe allegiance to your country(noun.person)
A foreigner; one owing allegiance, or belonging, to another country; a foreign-born resident of a country in which he does not possess the privileges of a citizen. Hence, a stranger. See Alienage.(noun)
source: webster1913
adjective satellite (s)
not contained in or deriving from the essential nature of something(adj.all)
Example: An economic theory alien to the spirit of capitalism.