Synonyms for alien

modified

1. Of foreign extraction

   exotic, strange, unknown; see foreign 1, 2.

2. Unlike

   different, dissimilar, outlandish, opposed; see repugnant 1, unusual 2. See syn. study atforeign.

noun

alien is applied to a resident who bears political allegiance to another country; foreigner, to a visitor or resident from another country, esp. one with a different language, cultural pattern, etc.; stranger, to a person from another region who is unacquainted with local people, customs, etc.; immigrant, to a person who comes to another country to settle; ?émigré, to a citizen of one country who has left it to take political refuge in another