Fades refer to the gradual disappearance of something over time. There are several synonyms you can use to replace the word fades such as vanish, diminish, dwindle, wane, decrease, decline, and ebb. Vanish implies an abrupt or sudden disappearance of something, while diminish suggests a gradual decrease in the intensity or significance of something. Dwindle, wane and decrease all imply a continuous and gradual decline, while decline suggests a steady decrease of something. Ebb refers to the gradual fading of something as it recedes away. In summary, these synonyms can help you to add more descriptive words in your writing and better convey the idea of something slowly disappearing over time.