Idiom Definition:
  
    
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"to go over someone's head"  
    to take an issue or decision to someone who has more authority than your direct superior
     
Synonyms: 
allow, authority, challenging, concession, defiant, dissent, sententious, insolent, insurgent, favor, let, license, mutiny, mutinous, permission, permit, rebel, rebellious, sedition, seditious
 
 
   
  
    
  
    This private is 
going over his Corporal's head and talking directly to the Captain ... 
