A blockbuster is a widely popular, successful and in-demand movie or product. There are several synonyms you can use instead of the word blockbuster such as hit, smash, sensation, chart-topper, bestseller, record-breaker, triumph, winner, masterpiece, classic, juggernaut, crowd-pleaser, sensation, charm, sensation, headline, marvel, phenomenon, success story, tour de force, box office hit, and showstopper. The usage of these synonyms depends on the context, and they all have similar meanings to the term blockbuster. Whether it is a movie, book, or product, using the right synonym enhances the quality and appeal of the content, making it more engaging and exciting for the audience.