loose cannon

US 
UK 
  • n.我行我素的人;难以控制的人;不按常理出牌的人
  • Web松动的大炮;我行我素不顾后果的人;混沌加农炮
Plural Form:loose cannons  
loose cannon
n.
1.
大炮(指举止无法预料的知名人士)a person, usually a public figure, who often behaves in a way that nobody can predict

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard