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
Unfortunately, studies suggest underdiagnosis to be extremely common, especially among Black and Hispanic populations, where a substantial proportion of dementia cases go undetected, according to Biology Insights.
—Wendy Coschignano-Ford, The Orlando Sentinel, 13 June 2026
The fire, known as the Lachman Fire, was not fully extinguished and had continued to smolder undetected before reigniting a week later and becoming the deadly Palisades Fire.
—Elizabeth Robinson, NBC news, 11 June 2026
Officials say a single undetected primary nest can produce a much larger secondary nest containing thousands of hornets and multiple reproductive queens capable of establishing new colonies.
—Christopher Harris, CBS News, 11 June 2026
Support for a ban on the carriage industry grew last year following the death of Lady, a carriage horse who died in August after an undetected tumor is thought to have sparked an aortic rupture.
—Evan Simko-Bednarski, New York Daily News, 11 June 2026
See All Example Sentences for undetected
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Wendy Coschignano-Ford, The Orlando Sentinel, 13 June 2026
The fire, known as the Lachman Fire, was not fully extinguished and had continued to smolder undetected before reigniting a week later and becoming the deadly Palisades Fire.
—Elizabeth Robinson, NBC news, 11 June 2026
Officials say a single undetected primary nest can produce a much larger secondary nest containing thousands of hornets and multiple reproductive queens capable of establishing new colonies.
—Christopher Harris, CBS News, 11 June 2026
Support for a ban on the carriage industry grew last year following the death of Lady, a carriage horse who died in August after an undetected tumor is thought to have sparked an aortic rupture.
—Evan Simko-Bednarski, New York Daily News, 11 June 2026
See All Example Sentences for undetected
Cite this Entry
“Undetected.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetected. Accessed 20 Jun. 2026.
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