uncontrolled
adjective
un·con·trolled
ˌən-kən-ˈtrōld 
: not controlled: such as
a
: happening or done without being stopped, slowed, or controlled
an uncontrolled tantrum
his uncontrolled anger
uncontrolled hypertension
uncontrolled urban sprawl
b
: not conducted or maintained in accordance with fixed rules, restraints, or procedures
results from an uncontrolled study
c
: not regulated by law with regard to possession and use
uncontrolled substances
Examples of uncontrolled in a Sentence
a tirade filled with uncontrolled anger about what the government was doing
Recent Examples on the Web
Then, uncontrolled, jerky movements develop as well as vision loss, dementia, and seizures.
—
Beth Mole, ArsTechnica, 11 Sep. 2025
While viral replication results in uncontrolled production of a large amounts of the protein, the way it’s produced by the mRNA vaccine is very different.
—Deborah Fuller, CNN Money, 10 Sep. 2025
Both infections and uncontrolled fevers during pregnancy have been linked to higher rates of autism.
—Allison Parshall, Scientific American, 10 Sep. 2025
While viral replication results in uncontrolled production of a large amounts of the protein, the way it’s produced by the mRNA vaccine is very different.
—Deborah Fuller, The Conversation, 3 Sep. 2025
See All Example Sentences for uncontrolled
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Beth Mole, ArsTechnica, 11 Sep. 2025
While viral replication results in uncontrolled production of a large amounts of the protein, the way it’s produced by the mRNA vaccine is very different.
—Deborah Fuller, CNN Money, 10 Sep. 2025
Both infections and uncontrolled fevers during pregnancy have been linked to higher rates of autism.
—Allison Parshall, Scientific American, 10 Sep. 2025
While viral replication results in uncontrolled production of a large amounts of the protein, the way it’s produced by the mRNA vaccine is very different.
—Deborah Fuller, The Conversation, 3 Sep. 2025
See All Example Sentences for uncontrolled
Cite this Entry
“Uncontrolled.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uncontrolled. Accessed 12 Sep. 2025.
Copy CitationMedical Definition
uncontrolled
adjective
un·con·trolled
ˌən-kən-ˈtrōld
1
: not being under control
uncontrolled hypertension
2
: not incorporating suitable experimental controls
uncontrolled drug trials
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