Synonyms of the word

extraterrestrial

• adj. Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth…
• n. A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien.

alien

• n. A person, animal, plant, or other thing which is from outside the family, group, organization, or territory…
• n. A foreigner residing in a country.
• n. Any life form of extraterrestrial origin.
• n. One excluded from certain privileges; one alienated or estranged.
• adj. Pertaining to an alien.
• adj. Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.
• adj. Very unfamiliar, strange, or removed.
• v. (transitive) To estrange; to alienate.
• v. (law) To transfer the ownership of something.