undocumented

Definitions of undocumented
  1. adjective
    lacking necessary documents (as for e.g. permission to live or work in a country)
    undocumented aliens”
    undocumented tax deductions”
    Synonyms:
    unregistered
    (a boat or vessel) not furnished with official documents
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    Antonyms:
    documented
    furnished with or supported by documents
    referenced
    supported with written references or citations
    registered
    (of a boat or vessel) furnished with necessary official documents specifying ownership etc
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