Showing results for undiagnosed. Search instead for underdiagnosed.

undiagnosed

British

/ ˌʌndaɪəɡˈnəʊzd /

adjective

(of a medical condition, a problem, etc) not having been identified

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As a kid with learning differences, whose undiagnosed dyslexia put him behind in school.

From Los Angeles Times • Mar. 4, 2026

Controllable endemic diseases like high blood pressure will be undiagnosed and ignored until paralysis sets in.

From MarketWatch • Jan. 26, 2026

Health Secretary Wes Streeting said he would meet the father of a two-year-old girl who died from undiagnosed type 1 diabetes.

From BBC • Jan. 23, 2026

The report also recommended that before a neurological condition is declared "undiagnosed," a patient must be seen by two specialists.

From Barron's • Jan. 23, 2026

The mind of the general public had its parallel, at the moment, in the temperature of a patient in the early stages of, as yet, undiagnosed typhoid or any other fever.

From Robin by Burnett, Frances Hodgson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023