Dynastic is a word that refers to something related to a ruling dynasty. There are many possible synonyms for this word, depending on the context and the type of dynasty being referred to. Some synonyms that would be appropriate in certain situations include hereditary, monarchic, regal, imperial, royal, aristocratic, and patrimonial. Each of these words has a slightly different connotation and emphasis, but they all relate to the idea of a ruling family or lineage. Other potential synonyms for dynastic may include terms like feudal, oligarchic, or autocratic, depending on the specific nature of the dynasty in question and the power dynamics involved.