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
Authorities are examining whether the aircraft was launched from land or from an undetected vessel that evaded radar.
—Hannah Parry, MSNBC Newsweek, 5 Dec. 2025
Sure, maybe Cirie Fields or Harry Clark played a better game, but no one else managed to go so undetected while giving the audience so much to watch.
—Jason P. Frank, Vulture, 4 Dec. 2025
As a result, the monitors couldn’t detect the full range of emissions that could emanate from the refinery — meaning that high levels of emissions could go undetected and unreported, the district said.
—Jakob Rodgers, Mercury News, 2 Dec. 2025
Many cases go undetected until rupture, which proves fatal or causes permanent neurological damage in most patients.
—Neetika Walter, Interesting Engineering, 13 Nov. 2025
See All Example Sentences for undetected
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Hannah Parry, MSNBC Newsweek, 5 Dec. 2025
Sure, maybe Cirie Fields or Harry Clark played a better game, but no one else managed to go so undetected while giving the audience so much to watch.
—Jason P. Frank, Vulture, 4 Dec. 2025
As a result, the monitors couldn’t detect the full range of emissions that could emanate from the refinery — meaning that high levels of emissions could go undetected and unreported, the district said.
—Jakob Rodgers, Mercury News, 2 Dec. 2025
Many cases go undetected until rupture, which proves fatal or causes permanent neurological damage in most patients.
—Neetika Walter, Interesting Engineering, 13 Nov. 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 8 Dec. 2025.
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