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loose cannon

noun

Definition of loose cannon

  1. :  a dangerously uncontrollable person or thing

See loose cannon defined for English-language learners

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Examples of loose cannon in a Sentence

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

First Known Use of loose cannon

1889

LOOSE CANNON Defined for English Language Learners

loose cannon

noun

Definition of loose cannon for English Language Learners

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

Learn More about loose cannon

  1. See words that rhyme with loose cannon

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Examples: loose cannon in a Sentence