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
The black mamba’s highly potent venom acts swiftly, shutting down nerve function and leading to progressive paralysis, respiratory failure and, ultimately, death if left untreated.
—
Scott Travers, Forbes.com, 29 Mar. 2025
Left untreated, blood clots can cause serious, if not fatal, complications.
—Alicen Nelson Md, Verywell Health, 27 Mar. 2025
Preventing the psychological distress and social withdrawal caused by untreated hair loss can reduce long-term health care costs, including mental health treatment and lost productivity.
—Nathan Kattapuram, Baltimore Sun, 19 Mar. 2025
While your prognosis is good with treatment, if left untreated, intussusception can be fatal in 2-5 days.5
Treatment differs slightly in children and adults because of age and the typical location of the intussusception.
—Sayaka Blickenderfer, Phd, Health, 13 Mar. 2025
See All Example Sentences for untreated
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Scott Travers, Forbes.com, 29 Mar. 2025
Left untreated, blood clots can cause serious, if not fatal, complications.
—Alicen Nelson Md, Verywell Health, 27 Mar. 2025
Preventing the psychological distress and social withdrawal caused by untreated hair loss can reduce long-term health care costs, including mental health treatment and lost productivity.
—Nathan Kattapuram, Baltimore Sun, 19 Mar. 2025
While your prognosis is good with treatment, if left untreated, intussusception can be fatal in 2-5 days.5
Treatment differs slightly in children and adults because of age and the typical location of the intussusception.
—Sayaka Blickenderfer, Phd, Health, 13 Mar. 2025
See All Example Sentences for untreated
Cite this Entry
“Untreated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreated. Accessed 4 Apr. 2025.
Copy CitationMedical Definition
untreated
adjective
un·treat·ed
-ˈtrēt-əd
: not subjected to treatment
an untreated disease
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