mortgage the/one's future
idiom
        chiefly US,  disapproving      
      
                                
                                
              
          
                                                      : to borrow a large amount of money that will have to be paid back in the future                                      
              
                             
The city has mortgaged its future to pay for the new stadium.
                         
                
                  —sometimes used figurativelySome critics say that she has mortgaged her political future on a program that is likely to fail.
    
                
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  Merriam-Webster unabridged




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