Of concern to or concerning the affairs of other nations (other than your own).

Polish: zagraniczny, obcokrajowy

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.

synonym: strange.

Roget 10: irrelative^†, irrespective, unrelated; arbitrary; independent, unallied; unconnected, disconnected; adrift, isolated, insular; extraneous, strange, alien, foreign, outlandish, exotic.    not comparable, incommensurable, heterogeneous; unconformable etc. 83.    irrelevant, inapplicable; not pertinent, not to the, purpose; impertinent, inapposite, beside the mark, a propos de bottes [Fr.]; aside from the purpose, away from the purpose, foreign to the purpose, beside the purpose, beside the question, beside the transaction, beside the point; misplaced etc. (intrusive) 24; traveling out of the record.    remote, far-fetched, out of the way, forced, neither here nor there, quite another thing; detached, segregate; disquiparant^†.    multifarious; discordant etc. 24.    incidental, parenthetical, obiter dicta, episodic.    ... show more

Polish: cudzoziemczy, cudzoziemski

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.

synonym: alien.

Roget 57: extraneous, foreign, alien, ulterior; tramontane, ultramontane.    excluded etc. 55; inadmissible; exceptional.   

Not belonging to that in which it is contained; introduced from an outside source:
— Foreign particles in milk.

synonym: extraneous.