frustration[frʌs'treiʃən]
n. 打破,挫折,顿挫
It's healthier to release frustration than to bottle it up.
受挫折后发泄一通比强忍着对身体有益。
[计算机] 失败
[外贸]失信
例如：Complaint concerning frustration表示“申诉不履行承诺”。