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alien (EN)
sustantivo, adjetivo

sustantivo “alien”

sing. alien, pl. aliens
  1. extranjero
    Many aliens seek refuge in new countries to escape difficult conditions in their homeland.
  2. extraterrestre
    The spaceship landed, and out stepped an alien with green skin and large, black eyes.

adjetivo “alien”

forma base alien, no graduable
  1. ajeno
    The customs of the distant tribe were completely alien to the tourists.
  2. alienígena (similar a seres del espacio exterior)
    The skull they found in the forest seemed alien.