Drumbeater is a term used to describe someone who loudly promotes their cause or viewpoint, often to the point of annoyance. However, there are several synonyms that can be used to describe such a person. A few examples include: cheerleader, advocate, champion, enthusiast, zealot, crusader, evangelist, propagandist, and promoter. Each of these words conveys a slightly different nuance of enthusiastic support, but they all share a common thread of passionate advocacy. While being called a drumbeater may have negative connotations, using one of these synonyms can help to give a more positive and accurate portrayal of someone who is dedicated to their beliefs.