undiagnosed

adjective

un·​di·​ag·​nosed ˌən-ˌdī-ig-ˈnōst How to pronounce undiagnosed (audio)
-əg-,
-zd
: not diagnosed : not identified through diagnosis
an undiagnosed illness
… the symptoms of the syndrome may be subtle and thus may remain undiagnosed.Dwight R. Robinson
a condition that often goes undiagnosed

Examples of undiagnosed in a Sentence

Recent Examples on the Web
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.
Type 2 diabetes, linked to insulin resistance, affects a significant portion of the American population, many undiagnosed. Pre-diabetes, also caused by insulin resistance, often progresses to Type 2 diabetes if lifestyle changes aren't made. Bryant Stamford, The Courier-Journal, 10 July 2025 The club’s communication has not helped, though noticeable strides in transparency have been evident since the saga of Alvarez’s undiagnosed hand fracture. Chandler Rome, New York Times, 10 July 2025 The spike in chronic absenteeism is linked to undiagnosed mental health issues among students and the inability to build social skills when schools closed during the pandemic, Moore said. Stephen Simpson, Austin American Statesman, 2 July 2025 Local zoning remains the most frequently undiagnosed cause of madness. Kevin Rennie, Hartford Courant, 21 June 2025 See All Example Sentences for undiagnosed

Word History

First Known Use

1864, in the meaning defined above

Time Traveler
The first known use of undiagnosed was in 1864

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Cite this Entry

“Undiagnosed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undiagnosed. Accessed 20 Jul. 2025.

Medical Definition

undiagnosed

adjective
un·​di·​ag·​nosed -ˈnōst How to pronounce undiagnosed (audio)
: not diagnosed : eluding diagnosis
undiagnosed disease
Last Updated: - Updated example sentences
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