confidence

自信、信心

She spoke with confidence in front of the whole class.

她在全班面前说话很有自信。

信任、信赖

The manager has lost the confidence of her team.

那位主管已失去团队的信任。

把握、确信

I can say with confidence that sales will rise next year.

我可以很有把握地说，明年业绩会成长。

秘密、私密话

She shared a confidence with me that I promised to keep.

她告诉我一件秘密，我答应会保守。

私下地、保密地

He told me in confidence that he was quitting the job.

他私下告诉我他要辞掉这份工作。