The phrase "chafe at the bit" is commonly used to describe someone who is impatient or restless. There are several synonyms for this phrase, including "itching to go," "eager for action," "restless to start," "anxious to begin," "craving for movement," and "antsy for progress." These synonyms all convey a sense of anticipation and a desire to move forward, whether it's in a personal or professional setting. Using these alternative phrases can help avoid repetitive language and add variety to your writing or speech.