undocumented

From un- +‎ documented.

undocumented (not comparable)

1. Lacking instructions or reference material.

   Undocumented software can be very difficult to learn to use.

2. Not having official documents that provide identification, authorization, etc.
   • 1861, United States, War Department - Annual Reports:

     On arrival from a foreign port, undocumented foreign-built vessels, if laden with goods, wares or merchandise, may, with their cargoes, be subject to forfeiture.

   1. (of a person) Not having official documentation required to legally enter, reside in, or work in a country.

      undocumented immigrant

      • 2017 May 25, Mark Zuckerberg, “Mark Zuckerberg’s Commencement address at Harvard”, in The Harvard Gazette‎:

        One day after class I was talking to them about college, and one of my top students raised his hand and said he wasn’t sure he could go because he’s undocumented. He didn’t know if they’d let him in.

      • 2025 January 26, Priscilla Alvarez and Rosa Flores, “Trump administration launches nationwide immigration enforcement blitz”, in CNN‎:

        In Tucker, another Atlanta suburb, an undocumented man attending church was arrested after ICE agents arrived, pastor Luis Ortiz told CNN. He said he was in the middle of his sermon when he noticed a couple of members of his church escort the man out.

undocumented (plural undocumenteds)

1. (informal) Synonym of undocumented immigrant.
   • 1986, Social Science Quarterly, volume 67, page 676:

     Although the first generation is likely to have greater fluency than the undocumenteds, the controversy over bilingual education attests to the persistence of language difficulties.