The term "walk-on" is commonly used in theatre and film to describe a minor character or actor who has a brief appearance on screen or on stage. However, there are various synonyms for the word "walk-on," which can be used to describe these types of roles. Some of the common synonyms for walk-on include cameo, bit part, extra, non-speaking role, background performer, and supporting actor. These terms all refer to the same type of role, but each one has its own slight nuances and connotations. Understanding these synonyms can be useful for writers and actors alike when discussing roles in theatre or film.