displaced person — a person driven or expelled from his or her homeland by war, famine, tyranny, etc. Abbreviation: DP, D.P.
emigre — One who has departed their native land, often as a refugee.
verb expatriate
banish — If someone or something is banished from a place or area of activity, they are sent away from it and prevented from entering it.
deport — If a government deports someone, usually someone who is not a citizen of that country, it sends them out of the country because they have committed a crime or because it believes they do not have the right to be there.
displace — to compel (a person or persons) to leave home, country, etc.
ostracise — to exclude, by general consent, from society, friendship, conversation, privileges, etc.: His friends ostracized him after his father's arrest.
ostracize — to exclude, by general consent, from society, friendship, conversation, privileges, etc.: His friends ostracized him after his father's arrest.
oust — to expel or remove from a place or position occupied: The bouncer ousted the drunk; to oust the prime minister in the next election.
proscribe — to denounce or condemn (a thing) as dangerous or harmful; prohibit.
relegate — to send or consign to an inferior position, place, or condition: He has been relegated to a post at the fringes of the diplomatic service.
transport — to carry, move, or convey from one place to another.
adjective expatriate
nationless — a large body of people, associated with a particular territory, that is sufficiently conscious of its unity to seek or to possess a government peculiarly its own: The president spoke to the nation about the new tax.