Spiritual : relating to or affecting the human spirit or soul as opposed to material or physical things.Royal : having the status of a king or queen or a member of their family.Practical : of or concerned with the actual doing or use of something rather than with theory and ideas.Theoretical : concerned with or involving the theory of a subject or area of study rather than its practical application.Empirical : based on, concerned with, or verifiable by observation or experience rather than theory or pure logic.So, Synonym of Empirical is Practical