frustrate

1. (transitive) To disappoint or defeat; to vex by depriving of something expected or desired.Examples: "It frustrates me to do all this work and then lose it all."

2. (transitive) To hinder or thwart.Examples: "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."Synonyms: behedge, blunt, delay, difficult, diminish, forestay, interfere, intervene

3. (transitive) To cause stress or annoyance.Examples: "This test frustrates me because if I fail, it'll destroy my grade."Synonyms: aggravate, annoy, rankle, ruffle, sting, antagonize, bother, disgruntle