How do you say "alien", in the sense of a being from another planet? In Portuguese there is the word alienígena, which I believe is a cognate of the English word. But this is used almost exclusively in science fiction literature. Most people would be more likely to say extraterrestre, "extra-terrestrial", or simply monstro, "monster", if it's in the context of a horror story, like the film with the same name. I'm primarily interested in the word, rather than the film. (In Portugal the film Alien was dubbed Alien—O oitavo passageiro, which means 'Alien'—The eighth passenger. The title was not translated literally.) Thanks in advance.