"Naying" is a term used to describe the sound that a horse makes, often referred to as a whinny or neigh. However, there are several other synonyms for this term that can be used to describe the unique vocalizations of these majestic creatures. Some of the most common synonyms for "naying" include nickering, snickering, braying, and trilling. Each of these words describes a specific type of vocalization made by a horse and can add a touch of detail and precision to your writing if used correctly. So, consider using these synonyms to add some variation to your descriptions of horses and their sounds.