1
                    
                                          
              
          
                                                      : marked by unswerving loyalty (as to a party)                                      
                
                    
2
                    
                                          
              
          
                                                      : genuine                                      
              
                             
a true-blue romantic
                         
                
                    
                                
              
          
                                                      : a person who is true-blue                                      
                
                    
Love words? Need even more definitions?
  
  Merriam-Webster unabridged




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