There are a few different words with approximately that meaning. They are étranger, extra-terrestre and aliéné.
étranger is a more generalised word, which is also used for "stranger" or "foreigner"if you are specifically talking about an alien from space, you would say: un/une extraterrestre
An alien looking like the one to the left or it is french for and.
Jacky Billeau has written: 'Personnels d'entreprises et expatriation' -- subject(s): Alien labor, French, Alien labor, Norwegian, French Alien labor, Norwegian Alien labor
The noun "alien" is a singular, common, concrete noun, a word for a person. The word "alien" is also an adjective.
It means 'the alien'.
I can tell that is an alien space ship.
The Romanian language equivalent of alien is străin.
extra-terrestres or etranger
"The first contact with the alien was disconcerting." "The ways of foreigners are alien to us."
An alien, immigrant, incomer, outsider, stranger, outlander
alien
Zar.