frustrate

Etymology

From Middle English frustraten, from Latin frūstrātus, perfect passive participle of frūstrō (“I deceive”).

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.
   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. 2019-10-09, Farhad Manjoo, “Dealing With China Isn’t Worth the Moral Cost”, in New York Times
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.