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.
Barrett noted that up to 40 percent of older cats develop chronic kidney disease, and over 90 percent may have osteoarthritis, often going undiagnosed due to their ability to mask pain. Melissa Fleur Afshar, MSNBC Newsweek, 21 July 2025 The number of people with TB who go undiagnosed is also shrinking rapidly: just 2.7 million in 2023, down from about 4 million in both 2020 and 2021, and below the 2019 pre-pandemic level of 3.2 million. Peter Sands, Forbes.com, 10 July 2025 Women suffering rare genital disorder that can cause intense pain, burning, buzzing, tingling often go undiagnosed. Amina Kilpatrick, NBC news, 7 July 2025 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 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 6 Aug. 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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