undocumented
Undocumented (adj) means not recorded in official papers or written instructions. Example: “The software has several undocumented features that only power users know about.”
How to use undocumented
Learner’s notesIn plain EnglishMissing the official paperwork — either technical documentation or legal immigration status.
"Undocumented" is the standard, neutral term used for immigrants without legal status; avoid older, more loaded terms.
Word forms
- Plural
- undocumenteds
Fill the gap
Can you complete this real example?
The software has several _____ features that only power users know about.
Etymology
From un- ("not") plus documented, the past participle of document.