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.
With his jaw clenched and sights set on being the next James Bond, Aaron Taylor-Johnson plays Major Will Tranter, a bomb disposal pro who’s both an ace sniper and a bit of a loose cannon, breaking protocol in his obsessive attempt to deactivate the vintage ordnance with minimal casualties. Peter Debruge, Variety, 6 Sep. 2025 Consummate loose cannon Howard Lutnick has orchestrated the president’s fluctuating tariff regime, while the more mild-mannered Steve Witkoff has been tasked with securing peace in Ukraine and Gaza. Brendan O'Connor, Curbed, 7 July 2025 But the scheme puts several targets on his back: governments and corporate entities see him as a loose cannon, and the revolutionaries see him as a predator. Richard Brody, New Yorker, 29 May 2025 Franco discussed his quick but impactful guest appearance in the comedy show in a conversation with Entertainment Weekly, explaining that the real Dave Franco isn't even close to the loose cannon that The Studio might lead you to believe. Wesley Stenzel, EW.com, 14 May 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 10 Sep. 2025.

Last Updated: - Updated example sentences
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