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undocumented

[uhn-dok-yuh-men-tid] /ʌnˈdɒk yəˌmɛn tɪd/
adjective
1.
lacking documentation or authentication.
2.
lacking proper immigration or working papers.
Origin
1880-1885
1880-85; un-1 + documented
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for undocumented
adj.

1883, from un- (1) "not" + past participle of document (v.).

Online Etymology Dictionary, © 2010 Douglas Harper
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