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

Which critical dependencies rely on a single supplier, technician or undocumented process? — Syed Ali, Forbes.com, 5 Oct. 2026

So would Hilton at least be an advocate for undocumented immigrants? — Los Angeles Times, 3 Oct. 2026

The parents of Sheridan Gorman, the 18-year-old Loyola University Chicago freshman from Yorktown, New York, who was shot and killed in March, allegedly by an undocumented immigrant, also questioned the candidates. — Dick Brennan, CBS News, 29 Sep. 2026

In my view, Florida lawmakers are not against undocumented students getting a college education, just not at taxpayer expense. — Letters To The Editor, The Orlando Sentinel, 24 Sep. 2026

Word History

First Known Use

1867, in the meaning defined above