addictive
adjective
                                                                                                                            
                                                            ad·dic·tive
                    
                                                                                                              
                                                                                                                                  ə-ˈdik-tiv 
                                                                                                                              
            a-
                                                      
                                                          
                                
              
          
                                                      : causing or characterized by addiction                                      
              
                             
an addictive drug
                                       an addictive personality
                         
                
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  Merriam-Webster unabridged




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