Mythical is an adjective that is commonly used to describe something that is legendary or imaginary. However, there are several other words you can use in place of mythical to diversify your writing and create more vivid descriptions. Some synonyms for mythical include mystical, fabulous, legendary, mythical, enchanted, otherworldly, fictitious, imaginary, and fictional. Each of these words carries a slightly different nuance, so it's worth considering the context in which you're using them. By using synonyms for mythical, you can add depth and nuance to your writing and create a more memorable reading experience for your audience.