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

Citizens who live outside of Colorado do not qualify for in-state tuition, and that makes offering the rates to undocumented students unconstitutional, the DOJ argued. — Shelly Bradbury, Denver Post, 23 July 2026

Many municipal processes rely on a handful of long-serving employees whose undocumented expertise keeps critical services running. — Expert Panel®, Forbes.com, 23 July 2026

Made false claims of massive fraud of millions of undocumented people voting. — Mathew Miranda, Sacbee.com, 17 July 2026

Meanwhile, traditional efforts to take undocumented immigrants into custody from their homes have become less effective. — Andy Rose, CNN Money, 16 July 2026

Word History

First Known Use

1867, in the meaning defined above