un·​con·​trolled | \ ˌən-kən-ˈtrōld How to pronounce uncontrolled (audio) \

Definition of uncontrolled

: 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

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Examples of uncontrolled in a Sentence

Recent Examples on the Web The uncontrolled spread of COVID-19 in the U.S. made attending large public gatherings far too risky. Krystal Vasquez, Scientific American, "Virtual Conferences Aren't as Accessible as You Might Think," 18 Feb. 2021 The positivity rate of diagnostic testing has dropped to 3.8% in Minnesota, below the caution threshold of 5% that suggests uncontrolled spread of the virus. Jeremy Olson, Star Tribune, "Minnesota COVID-19 cases decline but variant risks rise," 16 Feb. 2021 Scientists say masks are among the most effective tools for slowing the uncontrolled spread of the coronavirus, which has killed more than 430,000 people in the United States. Michael Laris, Anchorage Daily News, "CDC issues sweeping mask mandate for planes, public transportation in U.S.," 31 Jan. 2021 The world’s uncontrolled circulation of the virus has already bred mutant strains that are markedly more infectious than existing ones. Atul Gawande, The New Yorker, "Inside the Worst-Hit County in the Worst-Hit State in the Worst-Hit Country," 8 Feb. 2021 The best touch here is Flagg descending from his hovering position above the Strip in a manner that seems a bit uncontrolled. Brian Tallerico, Vulture, "The Stand Recap: This Is the End," 4 Feb. 2021 New Orleans Mayor LaToya Cantrell's administration Tuesday defended a hands-off approach to a recent uncontrolled street party of tourists and other revelers, after social media footage circulated on Saturday of a Bourbon Street crowd partying. Sarah Ravits, NOLA.com, "City officials remain lax on enforcing large gatherings despite 'very unsafe situation'," 2 Feb. 2021 Scientists abroad fretted over the safety of such a huge, uncontrolled experiment. The Economist, "Chinese covid vaccines China’s jabs may have an important role," 23 Jan. 2021 Clinical trials are executed in a highly controlled and clean environment, while the real world can be highly uncontrolled and very messy. Nicholas Mischel, oregonlive, "New antidepressants act fast but relief comes with risk: The Conversation," 22 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'uncontrolled.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of uncontrolled

circa 1535, in the meaning defined above

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Time Traveler for uncontrolled

Time Traveler

The first known use of uncontrolled was circa 1535

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Statistics for uncontrolled

Last Updated

28 Feb 2021

Cite this Entry

“Uncontrolled.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uncontrolled. Accessed 4 Mar. 2021.

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More Definitions for uncontrolled



English Language Learners Definition of uncontrolled

: happening or done without being stopped, slowed, or controlled


un·​con·​trolled | \ ˌən-kən-ˈtrōld \

Kids Definition of uncontrolled

: not being controlled


un·​con·​trolled | \ ˌən-kən-ˈtrōld How to pronounce uncontrolled (audio) \

Medical Definition of uncontrolled

1 : not being under control uncontrolled hypertension
2 : not incorporating suitable experimental controls uncontrolled drug trials

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Comments on uncontrolled

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