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.
The unusually high severity of this year's wave also suggests many mild cases of spread are going undiagnosed. Faris Tanyos, CBS News, 2 May 2025 Viral hepatitis is often undiagnosed and underreported. Chiara Eisner, NPR, 16 Apr. 2025 And yet, the World Health Organization estimates that up to 70% of PCOS cases go undiagnosed. Eva Epker, Forbes.com, 15 Apr. 2025 In other words, many children with ASD previously went undiagnosed. James M. Gaylor, Baltimore Sun, 7 Apr. 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 25 May. 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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