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

Workers who leave without an agreement become undocumented, as their residency permits depend on employers. — Alexandra Harrell, Footwear News, 12 Aug. 2026

At the hospital where Pryor works in Indio, undocumented workers do not often seek care at the onset of their symptoms for fear of ICE interactions. — Sofia Williams, Sacbee.com, 12 Aug. 2026

The creators wanted to tell a relevant story about the pressure on health care workers to deal with undocumented workers and patients detained by ICE. — Anne Thompson, IndieWire, 11 Aug. 2026

Overstaying a visa, violating the terms of a visa, or simply existing while undocumented are civil offenses. — Irene Wright, USA Today, 11 Aug. 2026

Word History

First Known Use

1867, in the meaning defined above