die of
phrasal verb
            
              died of; dying of; dies of            
        
    
                                
              
          
                                                      : to die because of (something)                                      
              
                             
My uncle died of cancer.
                                       She died of old age.
                                       They say that he died of a broken heart.
                         
                
                  —sometimes used figuratively to say something causes a lot of discomfort, distress, etc.I almost died of embarrassment.
Would you like some water? You must be dying of thirst.
    
                
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  Merriam-Webster unabridged




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