Refers to an attempted action, often with a connotation of failure.
La intentona de cambiar el sistema educativo ha sido aclamada por muchos, aunque otros la critiquen.
The attempt to change the educational system has been praised by many, although others criticize it.
Su intentona de convencer al jefe fracasó, ya que no estaba dispuesto a escuchar.
His attempt to convince the boss failed, as he was not willing to listen.