negotiorum gestio
noun
                                                                                                                            
                                                            ne·go·ti·or·um ges·tio
                    
                                                                                                              
                                                                                                                              
            ni-ˌgō-shē-ˈȯr-əm-ˈjes-chē-ō
                                                      
                                                          
                      in the civil law of Louisiana 
                                  
              
          
                                                      : the management of or interference with the business or affairs of another without authority                                      
                
                    
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  Merriam-Webster unabridged




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