1. to carry out or execute an action, task, or artistic presentation suddenly and without warning or preparation
The actor performed abruptly, catching the audience by surprise.
O ator atuou abruptamente, surpreendendo o público.
2. to present a performance in a sudden or unexpected manner
The musician performed abruptly, jumping onto the stage without introduction.
O músico atuou abruptamente, saltando para o palco sem apresentação.