uncontrolled

adjective

un·​con·​trolled ˌən-kən-ˈtrōld How to pronounce uncontrolled (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sepsis is a condition that leads to uncontrolled inflammation in the body and sometimes organ failure. Adrianna Rodriguez, USA Today, 2 Apr. 2025 And the risk of loss that comes with uncontrolled communications is profound. CBS News, 30 Mar. 2025 They were intentionally placed there, then allowed to spread uncontrolled. Anthony Reardon, Kansas City Star, 28 Mar. 2025 Public and Political Resistance – While Canada has traditionally supported immigration, large-scale, uncontrolled migration could trigger political backlash, making the government more hesitant to loosen restrictions. Andy J. Semotiuk, Forbes, 12 Mar. 2025 See All Example Sentences for uncontrolled

Word History

First Known Use

circa 1535, in the meaning defined above

Time Traveler
The first known use of uncontrolled was circa 1535

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Cite this Entry

“Uncontrolled.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uncontrolled. Accessed 11 Apr. 2025.

Medical Definition

uncontrolled

adjective
un·​con·​trolled ˌən-kən-ˈtrōld How to pronounce uncontrolled (audio)
1
: not being under control
uncontrolled hypertension
2
: not incorporating suitable experimental controls
uncontrolled drug trials

More from Merriam-Webster on uncontrolled

Last Updated: - Updated example sentences
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