Loose cannon

Meaning

The idiom "loose cannon" refers to someone who is unpredictable, unreliable, or too free-spirited. This person may behave in a way that is not appropriate or safe for themselves or others.

Usage

• "Emma was always known as the loose cannon at work. Her wild ideas and impulsive actions made her colleagues nervous."
• "I don't think it's wise to invite someone who's known as a loose cannon to your wedding. They're more likely to cause chaos than celebrate with us."
• "The new employee, Sarah, was a bit of a loose cannon. She had great ideas but tended to act on them without thinking them through."
• "I was glad when my friend finally calmed down and stopped being such a loose cannon. We couldn't keep up with his reckless behavior anymore."
• "Despite being known as a loose cannon, Tom always managed to deliver great results at work. His creativity and risk-taking inspired others."

Roots and History

The idiom "loose cannon" originated in the 17th century when cannons were used on ships during battle. A loose cannon was a cannon that had been dislodged from its mounting and could fire at any angle, potentially causing harm to anyone nearby. The phrase was later applied metaphorically to describe someone who behaves in an unpredictable or dangerous way.

Synonyms in English

• Wild card
• Flake
• Hothead
• Rebel
• Free spirit

Synonyms in other languages

• Espèce sauvage (French) - a wild animal or person who behaves recklessly
• 人間蛙子 (Japanese) - a person who is unpredictable and impulsive
• לאמתי נוכחיה (Hebrew) - a person who acts without thought or consideration for others
• ازدبه (Persian) - a person who behaves recklessly or irresponsibly
• Vozzhaia (Russian) - a person who is unpredictable and impulsive, often with a tendency towards violence

Similar Idioms

• let your heart rule your head

• like a cat on a hot tin roof

• laughing stock