protagonist

/prəˈtæɡənɪst/
noun
  1. The main character in a story, play, movie, or book.
    • In the novel, the protagonist starts as a shy teenager and becomes a confident leader.
    • Harry Potter is the protagonist of the famous book series.
    • The movie's protagonist must overcome many challenges to save her family.
  2. A leading or important person in a real event, movement, or cause.
    • The scientist became a protagonist in the fight against climate change.
    • Martin Luther King Jr. was a key protagonist in the civil rights movement.
    • She was a protagonist of educational reform in her country.
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