undocumented

/ʌnˈdɑkjəˌmɛntɪd/
adjective
  1. Not having official documents, especially proof of legal immigration status.
    • She wrote a report about the challenges faced by undocumented students.
    • Many undocumented workers contribute to the local economy.
    • The organization provides legal help for undocumented immigrants.
  2. Not recorded or supported by written evidence or documentation.
    • The software had several undocumented features that confused users.
    • The historian found an undocumented event in the old letters.
    • His claims remained undocumented, so no one believed him.
What does "undocumented" mean? | whatsthatwordmean | whatsthatwordmean