- 1. 缺乏自信的，懦怯的；羞怯的[（+about）]
She is diffident about expressing her opinions. 她怯於表述自己的意見。
... or tending to hesitate. slow to act or proceed. 相似詞: backward; diffident Frank was so backward that he hesitated to ask her...
... was of a helpless, fleshy build, with a frank, open countenance and an innocent, diffident manner. Her eyes were large and patient, and in them dwelt...
... I study your story, you have a frank, open countenance and an innocent, diffident manner and in then dwelt such a shadow of distress. What do you think?