Meaning of the word "loose cannon" in English

What does "loose cannon" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

loose cannon

US /luːs ˈkæn.ən/
UK /luːs ˈkæn.ən/
"loose cannon" picture

Idiom

1.

a person who is unpredictable and can cause damage if not controlled

Example:
He's a real loose cannon; you never know what he's going to do next.
The new manager is a bit of a loose cannon, making decisions without consulting anyone.
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