English

Definition of loose cannon noun from the Oxford Advanced Learner's Dictionary

 

loose cannon

 noun
noun
BrE BrE//ˌluːs ˈkænən//
 
; NAmE NAmE//ˌluːs ˈkænən//
 
Describing strange traits
 
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a person, usually a public figure, who often behaves in a way that nobody can predict See related entries: Describing strange traits
See the Oxford Advanced American Dictionary entry: loose cannon