English

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Stereotypical grey aliens.
 
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Alternative forms

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Etymology

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From grey +‎ alien.

Noun

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grey alien (plural grey aliens)

  1. (science fiction or ufology) An archetypical humanoid alien, usually described as having grey skin, elongated, hairless, sexless features, and a large head with bulbous black eyes; chiefly associated with flying saucers, alien abductions and conspiracy theories relating to cover-ups by the United States government, such as Area 51.
  2. Used other than figuratively or idiomatically: see grey,‎ alien.

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