alien
/ˈeɪ.li.ən/
noun
Meaning
Any life form of extraterrestrial or extradimensional origin.
A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.
A foreigner residing in a country.
One excluded from certain privileges; one alienated or estranged.
Synonyms
verb
Meaning
To estrange; to alienate.
To transfer the ownership of something.
adjective
Meaning
Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.
"alien subjects, enemies, property, or shores"
Very unfamiliar, strange, or removed.
"principles alien to our religion"
Pertaining to extraterrestrial life.