Pronunciation: (fru-strā'shun),[key] —n. 1. act of frustrating; state of being frustrated: the frustration of the president's efforts. 2. an instance of being frustrated: to experience a series of frustrations before completing a project. 3. something that frustrates, as an unresolved problem.
4. a feeling of dissatisfaction, often accompanied by anxiety or depression, resulting from unfulfilled needs or unresolved problems.