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
Reinforce Change Management With Staged Rollouts As with any outage, Pennsylvania’s 911 failure highlighted how uncontrolled changes—whether in hardware, software or configurations—can disrupt critical systems.
—
Expert Panel®, Forbes.com, 3 Sep. 2025
Baxdrostat, an experimental medicine made by AstraZeneca, showed promise in treating people with uncontrolled or resistant high blood pressure in a recent trial.
—Jen Christensen, CNN Money, 30 Aug. 2025
Justice notes these preoccupations often impact our wellness in subtle and overlooked ways that can add up to significant harm like sleep disturbance, irritability, uncontrolled worry, ruminating about the ‘what ifs,’ exhaustion, burnout, and over-functioning.
—Essence, 27 Aug. 2025
The more unfortunate incident happened with the Soviet Kosmos 954 reactor, which, after operating in orbit, experienced uncontrolled reentry and disintegrated over a 600-kilometer swath of Canadian territory.
—Emily Waltz, IEEE Spectrum, 22 Aug. 2025
See All Example Sentences for uncontrolled
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Expert Panel®, Forbes.com, 3 Sep. 2025
Baxdrostat, an experimental medicine made by AstraZeneca, showed promise in treating people with uncontrolled or resistant high blood pressure in a recent trial.
—Jen Christensen, CNN Money, 30 Aug. 2025
Justice notes these preoccupations often impact our wellness in subtle and overlooked ways that can add up to significant harm like sleep disturbance, irritability, uncontrolled worry, ruminating about the ‘what ifs,’ exhaustion, burnout, and over-functioning.
—Essence, 27 Aug. 2025
The more unfortunate incident happened with the Soviet Kosmos 954 reactor, which, after operating in orbit, experienced uncontrolled reentry and disintegrated over a 600-kilometer swath of Canadian territory.
—Emily Waltz, IEEE Spectrum, 22 Aug. 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 9 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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