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loose cannon

noun

Simple Definition of loose cannon

  • : a person who cannot be controlled and who does or says things that cause problems, embarrassment, etc., for others

Source: Merriam-Webster's Learner's Dictionary

Full Definition of loose cannon

  1. :  a dangerously uncontrollable person or thing

Examples of loose cannon in a sentence

  1. a politician who is regarded as a loose cannon by her colleagues



1973

First Known Use of loose cannon

1973

Rhymes with loose cannon


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