Possible Results:
extraterrestres
-aliens
Masculine plural ofextraterrestre(noun)
extraterrestres
-aliens
Feminine plural ofextraterrestre(noun)
extraterrestres
-extraterrestrial
Plural ofextraterrestre(adjective)

extraterrestre

el extraterrestre, la extraterrestre, extraterrestre(
ehks
-
trah
-
teh
-
rrehs
-
treh
)
This means that the noun can be masculine or feminine, depending on the gender of the noun it refers to (e.g., el doctor, la doctora).
masculine or feminine noun
a. alien
Mi amiga cree que fue secuestrada por extraterrestres.My friend believes she was abducted by aliens.
b. extraterrestrial
Al final del libro, los extraterrestres regresan a su planeta.At the end of the book, the extraterrestrials go back to their planet.
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. extraterrestrial
Esta película de ciencia ficción trata de una civilización extraterrestre que viene a la Tierra.This sci-fi movie is about an extraterrestrial civilization coming to Earth.
b. alien
Este científico cree que existe la vida extraterrestre.This scientist believes alien life exists.
c. from outer space
Corrían rumores de que se había encontrado el cadáver de una criatura extraterrestre.There were rumors that the body of a creature from outer space had been found.
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