1. The main character or central figure in a story, play, film, or other narrative work
The protagonist of the novel is a young woman seeking revenge.
A protagonista do romance é uma jovem mulher em busca de vingança.
2. A person who plays the leading or most important role in an event or situation
She was the main protagonist in the political scandal.
Ela foi a principal protagonista do escândalo político.
3. A leading or prominent figure; a champion or advocate of a cause
He was a key protagonist in the environmental movement.
Ele foi um protagonista-chave no movimento ambiental.