What is another word for "interloper"?

Roget's Thesaurus (1911) lists these synonyms for "interloper": abroad, alien, alienage, alienism, beyond, body, creole, element, emigrant, exceptional, exteriority, extraneous, extrinsicality, foreign, foreigner, greaser, immigrant, inadmissible, intruder, newcomer, outsider, over, sea, slant, stranger, substance, tenderfoot, tramontane, ulterior, ultramontane.