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

An on-site doctor’s office draws Fatimah (Noha Foad), an undocumented, illiterate Muslim woman suffering from seizures. — Jay Weissberg, Variety, 23 Oct. 2026

Her thumbs fiddled, and her eyebrows rose as Castillo excoriated government spending on undocumented immigrants. — Jake Sheridan, Chicago Tribune, 22 Oct. 2026

The undocumented immigrants would use the pictures while applying for citizenship. — Matt Schooley, CBS News, 21 Oct. 2026

Finley is unsure if the voting process can be tightly monitored to prevent undocumented or unregistered people from attempting to vote. — Terry Tang, Los Angeles Times, 19 Oct. 2026

Word History

First Known Use

1867, in the meaning defined above