frustrate

verb

1. (transitive)To disappoint or defeat; to vex by depriving of something expected or desired.

   “It frustrates me to do all this work and then lose it all.”

2. (transitive)To hinder or thwart.

   “My clumsy fingers frustrate my typing efforts.”

   “Perhaps it was the too-tooing of the youth on the coach horn which frustrated the proposal, and made it appear ludicrous rather than insultive to her ears.”

   “With its far larger population, China’s economy will inevitably come to eclipse ours, but that is hardly a mortal threat. In climate change, the world faces a huge collective-action problem that will require global cooperation. According to this view, treating China like an adversary will only frustrate our own long-term goals.”

3. (transitive)To cause stress or annoyance.

   “This test frustrates me because if I fail, it'll destroy my grade.”

adj

1. ineffectual; useless; fruitless.

   “Our frustrate search.”

   “In all eternity I had one chance One few years' term of gracious human life […] And this sole chance was frustrate from my birth A mockery, a delusion; […]”