Loose Cannon (comics)
WordNet

noun


(1)   A person who is expected to perform a particular task but who is out of control and dangerous
WiktionaryText

Noun



  1. a cannon that breaks loose during battle or a storm and causes serious damage to the ship and its crew
  2. an uncontrolled or unpredictable person who causes damage to his own faction, political party etc.
Ron Paul is considered a loose cannon in the Republican Party due to his opposition to the Iraq War and libertarian views.
 
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