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
Synonyms
Examples of untreated in a Sentence
untreated wool
Recent Examples on the Web
The disease has the potential to be deadly if left untreated and is likely going to become more routine as climate change worsens.
—
Devika Rao, theweek, 3 July 2024
Without the means to stop the disease from spreading, cryptococcus meningitis is invariably fatal if left untreated.
—Brigid Dwyer, Verywell Health, 2 July 2024
If left untreated, Lyme disease can affect the brain, heart, and nervous system.
—Maggie O'Neill, Health, 1 July 2024
Carpenter Bee Houses These houses made of untreated wood should be hung or mounted as far away as possible from your home.
—Nafeesah Allen, Better Homes & Gardens, 25 June 2024
See all Example Sentences for untreated 
Devika Rao, theweek, 3 July 2024
Without the means to stop the disease from spreading, cryptococcus meningitis is invariably fatal if left untreated.
—Brigid Dwyer, Verywell Health, 2 July 2024
If left untreated, Lyme disease can affect the brain, heart, and nervous system.
—Maggie O'Neill, Health, 1 July 2024
Carpenter Bee Houses These houses made of untreated wood should be hung or mounted as far away as possible from your home.
—Nafeesah Allen, Better Homes & Gardens, 25 June 2024
See all Example Sentences for untreated
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'untreated.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Untreated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreated. Accessed 7 Jul. 2024.
Copy CitationMedical Definition
untreated
adjective
un·treat·ed
-ˈtrēt-əd
: not subjected to treatment
an untreated disease
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