a of concern to or concerning the affairs of other nations (other than your own)
foreign trade a foreign office
a relating to or originating in or characteristic of another place or part of the world
foreign nations a foreign accent on business in a foreign city
s not contained in or deriving from the essential nature of something
the mysticism so foreign to the French mind and temper jealousy is foreign to her nature
s not belonging to that in which it is contained; introduced from an outside source
foreign particles in milk