un·​di·​ag·​nosed ˌən-ˌdī-ig-ˈnōst How to pronounce undiagnosed (audio)
: 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 Children are also more likely to go undiagnosed and be carriers of the virus, according to Michigan Medicine, the University of Michigan's academic medical center. Hannah Hudnall, USA TODAY, 21 Aug. 2023 That can mean more patients go into pregnancy with undiagnosed health conditions and may be at higher risk for life-threatening complications. Kavitha Surana, ProPublica, 27 July 2023 Years of undiagnosed pelvic pain suddenly made sense. Claire Bugos, Verywell Health, 18 Aug. 2023 Stephens, a talented football player who was getting ready to play college football, died unexpectedly in 2012 due to an undiagnosed heart condition. Kirsty Hatcher, Peoplemag, 10 Aug. 2023 But 50% of women with postpartum depression, the most common complication of childbirth, go undiagnosed. Katharine Gammon, STAT, 26 June 2023 The damage to her brain and spinal column went undiagnosed. Diane Bell, San Diego Union-Tribune, 20 June 2023 With each turn of the page, a feeling builds that Urrea is on his own quest, a decades-long journey to fill in the blanks of a period in his family history that his mother — struggling with undiagnosed post-traumatic stress disorder — did not want to revisit. Manuel Roig-Franzia, Washington Post, 24 May 2023 There were more than 31,000 patients living with ALS in the United States in 2017, according to the CDC, but many cases go undiagnosed. Stephanie Emma Pfeffer, Peoplemag, 7 Aug. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'undiagnosed.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1864, in the meaning defined above

Time Traveler
The first known use of undiagnosed was in 1864

Dictionary Entries Near undiagnosed

Cite this Entry

“Undiagnosed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undiagnosed. Accessed 22 Sep. 2023.

Medical Definition


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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