Definition of frustration noun from the Oxford Advanced American Dictionary

     

    frustration

     noun
    noun
    NAmE//frʌˈstreɪʃn//
     
     
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  1. 1 [uncountable] the feeling of being frustrated Dave thumped the table in frustration. She couldn't stand the frustration of not being able to help. sexual frustration
  2. 2[countable, usually plural] something that causes you to feel frustrated Every job has its difficulties and frustrations. Inevitably she took out her frustrations on the children.
  3. 3[uncountable] frustration of something (formal) the fact that something is preventing something or someone from succeeding the frustration of all his ambitions
See the Oxford Advanced Learner's Dictionary entry: frustration