Synonyms for Foreign:

adj.

all (adjective)
strange.
extraneous (adjective)
extraterrestrial, separated, extraneous, foreign-born, inappropriate, eerie, immaterial, Unallied, exotic, irrelevant, dissociated, disaffiliated, other, outer, external, separate, extrinsic, unaffiliated, outlandish, impertinent, nonessential, estranged, inapplicable, unessential, removed, inadmissible, segregated, strange, disjoint, parenthetical, outside, unrelated, disconnected, detached, alien.
from another country, experience (adjective)
far, outlandish, barbarian, expatriate, barbaric, faraway, Borrowed, extraneous, alien, remote, antipodal, nonnative, extrinsic, unaccustomed, exotic, far-off, nonresident, estranged, overseas, inaccessible, unfamiliar, imported, different, external, strange, immigrant, outside.
international (adjective)
international.
irrelevant (adjective)
immaterial, impertinent, unrelated, heterogeneous, incongruous.
unrelated (adjective)
irrelevant, segregated, unrelated, inapplicable, alien, detached, unaffiliated, disenfranchised, disjoint, dissociated, Unallied, remote, separate, extraneous.

n.

heterogeneous, funny, eccentric, incongruous, unsuitable, surreal, edgy, idiosyncratic, weird, unreal. foreign (noun)
exotic, outside, abroad, tramontane, alien, international, external, extrinsic, unnaturalized, imported, established, strange, adulterant, nonnative, overseas, adulterating, unnaturalised, foreign-born, extraneous, adventive, naturalized.

Other synonyms:

nonresident, gaijin, foreigner. strange
unfamiliar.
unfamiliar
unaccustomed.

Usage examples for foreign

  1. He is not quite English, yet he is not at all foreign – One of Our Conquerors, Complete by George Meredith Last Updated: March 7, 2009
  2. She is partly of foreign blood, Bob. – A Daughter of the Union by Lucy Foster Madison
  3. The same method is adopted by English diplomatists freely to express their devotion to a foreign Court. – Secret Diplomatic History of The Eighteenth Century by Karl Marx