Horses are majestic creatures that have captivated humans for centuries. If you're a writer looking for synonyms for the word "horse," there are plenty to choose from. For example, you might choose to use the word "stallion" to refer specifically to a male horse, while "mare" refers to a female. For a more casual tone, "nag" or "nagging" can be used. "Equine" is another more formal term that can be used in a variety of contexts, while "colt" and "filly" are terms for young horses, and "steed" is often used to refer to a horse used for riding. Whatever word you choose, it's clear that horses will always hold a special place in our hearts and our language.