Shintoistic is an adjective that is used to describe someone or something that is related to or characteristic of Shintoism, which is an indigenous religion of Japan. Some common synonyms for the word Shintoistic include Shinto, Japanese religion, spiritual, divine, sacred, animistic, and mystical. These words all share a similar meaning, which is related to the beliefs and practices associated with Shintoism. Other alternative words could include traditional, indigenous, religious, cultural, and spiritualistic. Each of these synonyms can be used to describe various aspects of Shintoism and its influence on Japanese culture and society.