You searched for: “alien
alien (s) (noun), aliens (pl)
1. A citizen of a country other than the one he or she is currently living in: The alien who was trying to learn English was told that it was not acceptable to stick out his tongue when trying to pronounce th.
2. Anyone who does not belong to, or does not feel accepted by, a group or society.
3. A being from another planet, or another part of the universe; especially, in works of science fiction.
4. Not contained in or deriving from the essential nature of something.
A unit related to: “alien
Word Entries at Get Words: “alien
1. Belonging to another country, a foreigner, an outsider.
2. Strange in a situation; not natural.

"To the alien who was trying to learn English, it was alien to protrude his tongue in order to pronounce th."