frus·tra·tion 
(frŭ-strāshən)
(frŭ-strāshən)n.
1.
a. The act of preventing the accomplishment or fulfillment of something: the defense's frustration of their opponent's attempts to score.
b. The feeling or state of being frustrated: I couldn't get a real person to talk to and slammed down the phone in frustration.
2. Something that causes such a feeling or state: a job with many frustrations.