undetected

British  

/ ˌʌndɪˈtɛktɪd /

adjective

1. not perceived, noticed, or discovered

   the fake bomb passed undetected

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Example Sentences

A University of California, Los Angeles, study last year, for example, found that AI was better able to identify subtle signs of breast cancer that can develop and grow undetected between routine screenings.

From The Wall Street Journal

It said its agent made it out of the airfield undetected and is now in Ukraine.

From The Wall Street Journal

However, in rare cases, blood donors who are in the early stages of HIV infection may go undetected during initial screenings but test positive later, he adds.

From BBC

These figures do not include people who may have crossed the border undetected.

From BBC

It’s likely that plenty more of Cristobal’s secret strategies have gone undetected.

From The Wall Street Journal

Related Words

• uncharted
• undiscovered
• unexplored
• unheard-of