undocumented

adjective

un·​doc·​u·​ment·​ed ən-ˈdä-kyə-ˌmen-təd 

: not documented: such as

a

: not supported by documentary evidence

undocumented expenditures

b

: lacking documents required for legal immigration or residence

undocumented workers

Examples of undocumented in a Sentence

The company cannot reimburse you for undocumented travel expenses.

Recent Examples on the Web

The encouraging part is that undocumented knowledge isn’t unknowable. — Balaji Sreenivasan, Forbes.com, 13 Oct. 2026

At the time, her fellow DSA colleagues said McDonnell was the wrong person to protect the rights of the city’s undocumented immigrants. — David Zahniser, Los Angeles Times, 12 Oct. 2026

About 20 years ago, Hazleton passed the controversial Illegal Immigration Relief Act, which withheld permits from businesses employing undocumented immigrants and fined landlords who rented to them. — Sasha Rogelberg, Fortune, 11 Oct. 2026

Malaysia's prime minister has defended the repatriation policy, saying his country cannot host the undocumented foreign nationals indefinitely and that Myanmar must take responsibility for its citizens. — ABC News, 8 Oct. 2026

Word History

First Known Use

1867, in the meaning defined above