undetected

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Health authorities suspect many more people have been infected and in a wider area because the virus spread undetected for weeks.

From The Wall Street Journal • May 22, 2026

They were also allowed to operate largely undetected due to minimal monitoring of their activities, the use of obsolete systems by the firm and take advantage of failures including a lack of regular security scans.

From BBC • May 12, 2026

A higher threshold may reduce wrongful interventions but could allow legitimate threats to go undetected.

From Salon • May 12, 2026

"This won't eliminate deepfakes entirely, but it can significantly reduce their reach and impact by making it harder for manipulated content to go undetected or unchallenged," he added.

From Barron's • Apr. 24, 2026

People occupied every possible space, yet my lavatory visit went undetected.

From "Salt to the Sea" by Ruta Sepetys