fight with
phrasal verb
            
              fought with; fighting with; fights with            
        
    1
                    
                                          
              
          
                                                      : to fight against (someone or something)                                      
              
                             
He fought with his wife over/about money.
                                       The U.S. fought with Germany in World Wars I and II.
                                       He fought with several worthy opponents.
                         
                
                    2
                    
                                          
              
          
                                                      : to fight on the same side as (someone or something)                                      
              
                             
The U.S. fought (together) with the Soviet Union in World War II.
                         
                
                    3
                    
                                          
              
          
                                                      : to fight by using (something, such as a weapon)                                      
              
                             
They were fighting with knives.
                                       They fought with their fists.
                         
                
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  Merriam-Webster unabridged




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