loose cannon

noun

: a dangerously uncontrollable person or thing

Examples of loose cannon in a Sentence

a politician who is regarded as a loose cannon by her colleagues
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.
All the business with Ashley’s off-stage life feels ripped from a standard contentious relationship between loose cannon celebrity and overbearing manager. Steve Greene, IndieWire, 12 Apr. 2025 Belushi was a late hire by Michaels, as he was seen as a loose cannon. Bethy Squires, Vulture, 14 Apr. 2024 Vitor Pereira arrived at Molineux a virtual unknown in December, but has mustered the steely composure to transform Wolves’ leaky defence while presenting himself as a loose cannon on the touchline. Steve Madeley, New York Times, 2 Apr. 2025 Dani is a wild card, a loose cannon, an unpredictable force of nature whose actions are driven entirely by her fluctuating impulses. Andy Swift, TVLine, 24 Feb. 2025 See All Example Sentences for loose cannon

Word History

First Known Use

1889, in the meaning defined above

Time Traveler
The first known use of loose cannon was in 1889

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Cite this Entry

“Loose cannon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/loose%20cannon. Accessed 21 Apr. 2025.

Last Updated: - Updated example sentences
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