Chafed the bit is a phrase used to describe a horse's behavior when it is restless and impatient. it is a common phrase that is used in horse riding. If you are looking for synonyms for this phrase, you can use "fidgeted," "restlessly stomped," "impatiently pawed," or "tossed his head." These descriptions all convey the same sense of restlessness and impatience that chafing the bit does. As a rider, it is important to watch for these behaviors in your horse to ensure they aren't in discomfort and to be prepared to handle them safely.