untreated
adjective
un·treat·ed
ˌən-ˈtrē-təd 
: not treated
untreated wastewater
especially
: not improved or controlled medically
an untreated case of pneumonia
untreated diabetic patients
Examples of untreated in a Sentence
untreated wool
Recent Examples on the Web
Research has linked untreated hearing loss to social withdrawal, workplace difficulties, and cognitive health concerns later in life.
—
Matthew Kayser, Sacbee.com, 18 May 2026
Patients may also develop severe acne and oily skin as well as persistent fatigue, anxiety and depression that often go untreated because the symptoms are not connected to a single underlying hormonal picture.
—Adaira Landry, Forbes.com, 15 May 2026
Days after his death, Damas’ brother told The Associated Press that Damas died from an untreated tooth infection.
—Suzanne Gamboa, NBC news, 15 May 2026
These gaps — as well as the significant positives of antidepressants and the risks of untreated depression — steered the authors’ research.
—Kristen Rogers, CNN Money, 14 May 2026
See All Example Sentences for untreated
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Matthew Kayser, Sacbee.com, 18 May 2026
Patients may also develop severe acne and oily skin as well as persistent fatigue, anxiety and depression that often go untreated because the symptoms are not connected to a single underlying hormonal picture.
—Adaira Landry, Forbes.com, 15 May 2026
Days after his death, Damas’ brother told The Associated Press that Damas died from an untreated tooth infection.
—Suzanne Gamboa, NBC news, 15 May 2026
These gaps — as well as the significant positives of antidepressants and the risks of untreated depression — steered the authors’ research.
—Kristen Rogers, CNN Money, 14 May 2026
See All Example Sentences for untreated
Cite this Entry
“Untreated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreated. Accessed 21 May. 2026.
Copy CitationMedical Definition
untreated
adjective
un·treat·ed
-ˈtrēt-əd
: not subjected to treatment
an untreated disease
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