This is the 2198th most frequent Russian word.
выступил
"Выступил" means "performed," "spoke," or "stepped forward," depending on context.
In this sentence, "выступил" is used to indicate presenting or delivering a speech or performance in front of an audience.
Он выступил с речью перед зрителями.
He made a speech before the audience.
Here, "выступил" means expressed support or took a stance in favor of a certain idea or policy.
Политик выступил за ужесточение законов.
The politician advocated for stricter laws.
In this case, "выступил" refers to the action of performing or participating in a stage production or artistic act.