a.

1. 确信的；有信心的，自信的[（+of）][+（that）]
   He is quite confident that he will pass the examination.

   他很有信心通过考试。

   They are confident of success.

   他们有信心能够成功。

   He is confident of passing the examination.

   他有信心通过考试。

   Patrick was confident of his ability to get work for himself.

   派屈克自信有能力为自己找到工作。

2. 过于自信的，自负的；大胆的

adj.

1. feeling confidence in oneself.
2. feeling certainty about something.

n.