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undocumented alien

Meaning: a foreigner without a visa or work permit

For example:

  • Immigration officials raided our factory looking for undocumented aliens.

  • Refugees escaping from war are now being called "undocumented aliens" by immigration officials.

Quick Quiz:

An "undocumented alien" comes from

a. an undocumented country

b. a foreign country

c. another planet

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Contributor: Matt Errey