Definition
'Diplomatical' is an adjective related to diplomacy, the practice of conducting negotiations between representatives of states or groups. It's less commonly used than 'diplomatic' but essentially means the same thing. It pertains to the methods, procedures, or skills used in diplomacy. Think of it as describing something that is of or pertaining to diplomats. While 'diplomatic' often describes a person's behavior, 'diplomatical' relates more to the field itself. πΌ