Lacking instructions or reference material. / Not having official documents that provide identification, authorization, etc.

(informal) Synonym of undocumented immigrant

plural of undocumented

Third-person singular simple present indicative form of undocument

(transitive) To remove documentation about; to cause to be no longer documented or recorded.

present participle of undocument

An immigrant who has entered a country (often as a migrant worker) and has no documentation authorizing them to (still) be present there.

plural of undocumented immigrant

(euphemistic) Illegal immigrant, illegal alien.

plural of undocumented worker