Below are possible answers for the crossword clue Not terrestrial, perhaps.
5 letter answer(s) to not terrestrial, perhaps
ALIEN
a form of life assumed to exist outside the Earth or its atmosphere
a person who comes from a foreign country; someone who does not owe allegiance to your country
anyone who does not belong in the environment in which they are found
arouse hostility or indifference in where there had formerly been love, affection, or friendliness; "She alienated her friends when she became fanatically religious"
being or from or characteristic of another place or part of the world; "alien customs"; "exotic plants in a greenhouse"; "exotic cuisine"
not contained in or deriving from the essential nature of something; "an economic theory alien to the spirit of capitalism"; "the mysticism so foreign to the French mind and temper"; "jealousy is foreign to her nature"
transfer property or ownership; "The will aliened the property to the heirs"
6 letter answer(s) to not terrestrial, perhaps
MARINE
a member of the United States Marine Corps
a soldier who serves both on shipboard and on land
native to or inhabiting the sea; "marine plants and animals such as seaweed and whales"
of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps); "marine barracks"
of or relating to the sea; "marine explorations"
relating to or characteristic of or occurring on or in the sea
relating to or involving ships or shipping or navigation or seamen; "nautical charts"; "maritime law"; "marine insurance"
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