A pastmaster is someone who is highly skilled or experienced in a particular field. Some synonyms for pastmasters include virtuoso, expert, adept, master, authority, specialist, professional, veteran, skilled practitioner, and accomplished practitioner. These words all indicate individuals who possess a high level of skill, knowledge, and competence in their respective fields. They have mastered their craft through extensive practice, experience, and dedication. Whether it's music, cooking, writing, or any other skill, a pastmaster is someone who has surpassed the level of an average practitioner and has achieved excellence. Using these words can elevate one's writing or speech and convey a sense of admiration and respect for the person being described.