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.
As a result, many chronic diseases remain uncontrolled for years, leading to worsening health and skyrocketing medical costs. Robert Pearl, Forbes, 24 Feb. 2025 Based on preliminary information, the Falcon 9 rocket part was dragged out of orbit in an uncontrolled manner, which is likely why the vehicle appeared to reenter Earth’s atmosphere over Europe and crash-land this week. Jackie Wattles, CNN, 21 Feb. 2025 At uncontrolled airports, pilots use a common traffic advisory frequency to regularly announce their position to other pilots who are in the airport vicinity, the agency said. Eric Lagatta, USA TODAY, 20 Feb. 2025 Still, pilots flying into uncontrolled fields are required to comply with all Federal Aviation regulations, including maintaining minimum visibilities, safe altitudes and right-of-way rules. Stephen Sorace, Fox News, 19 Feb. 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

Browse Nearby Words

Cite this Entry

“Uncontrolled.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uncontrolled. Accessed 13 Mar. 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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