chagrin
noun [ U ] formal uk/ˈʃæɡ.rɪn/ us/ˈʃæɡ.rɪn/
（尤指失败或错误引起的）失望，懊丧，懊恼
disappointment or anger, especially when caused by a failure or mistake
My children have never shown an interest in music, much to my chagrin. 我的孩子们从没对音乐表现出一点兴趣，真让我失望。
Synonym: mortification