misgiving
noun [ C or U ] uk/ˌmɪsˈɡɪv.ɪŋ/ us/ˌmɪsˈɡɪv.ɪŋ/
（对未来事件的）疑虑，担忧
a feeling of doubt or worry about a future event
Many teachers expressed serious misgivings about the new tests. 许多教师表示对新的考试非常担忧。
My only misgiving is that we might not have enough time to do the job well. 我唯一的担心是我们可能没有足够的时间把这项工作做好。