A person who has risen, climbed up, or has been promoted to a higher social class, especially through acquisition of wealth, privileges, or political authority but has not gained social acceptance by those within that new class.
Being a parvenu; also, like, having the characteristics of, or associated with a parvenu.
An emigrant, one who departs their native land to become an immigrant in another, especially a political exile.
A French person who has departed their native land, especially a royalist who left during the French Revolution.