frustrado / frustrada (adjective)

  1. frustrated
  2. foiled, thwarted, failed (e.g. an attempt or plan that did not succeed)

El intento de robo quedó frustrado gracias a la alarma.

The robbery attempt was foiled thanks to the alarm.

Estaba frustrada porque el wifi se cortaba cada cinco minutos.

She was frustrated because the wifi kept cutting out every five minutes.