1
: not having the official documents that are needed to enter, live in, or work in a country legally
undocumented workers/aliens/immigrants
2
: not supported by evidence that consists of documents : not having written proof
The company cannot reimburse you for undocumented travel expenses.
Cite this Entry
“Undocumented.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/undocumented. Accessed 25 Jun. 2026.
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