undetected
adjective
un·de·tect·ed
ˌən-di-ˈtek-təd 
-dē-
: not observed, noticed, or detected
an undetected flaw/error
an undetected illness
These rare mistakes are subtle and may go undetected for months and even years.—
Mario Salvadori
Mario SalvadoriExamples of undetected in a Sentence
Recent Examples on the Web
Firmware-level security prevents unauthorized modifications, ensuring attackers can’t manipulate the system undetected.
—Camellia Chan, Forbes.com, 9 Apr. 2025
Occasionally, the virus can lie undetected in the brain of a person who recovered from measles and reactivate typically seven to 10 years later.
—Peter Kasson, The Conversation, 31 Mar. 2025
This time, a failing battery monitoring module meant that a low battery charge could go undetected and result in a sudden loss of driving power.
—Mary Walrath-Holdridge, USA TODAY, 19 Mar. 2025
Unlike cigarettes or vapes, the pouches can go undetected in meetings, on flights, or at the gym.
—Carrie Battan, The New Yorker, 10 Mar. 2025
See All Example Sentences for undetected
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Camellia Chan, Forbes.com, 9 Apr. 2025
Occasionally, the virus can lie undetected in the brain of a person who recovered from measles and reactivate typically seven to 10 years later.
—Peter Kasson, The Conversation, 31 Mar. 2025
This time, a failing battery monitoring module meant that a low battery charge could go undetected and result in a sudden loss of driving power.
—Mary Walrath-Holdridge, USA TODAY, 19 Mar. 2025
Unlike cigarettes or vapes, the pouches can go undetected in meetings, on flights, or at the gym.
—Carrie Battan, The New Yorker, 10 Mar. 2025
See All Example Sentences for undetected
Cite this Entry
“Undetected.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetected. Accessed 24 Apr. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share