confidence

自信、信心

She spoke with confidence in front of the whole class.

她在全班面前說話很有自信。

信任、信賴

The manager has lost the confidence of her team.

那位主管已失去團隊的信任。

把握、確信

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

我可以很有把握地說，明年業績會成長。

祕密、私密話

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

她告訴我一件祕密，我答應會保守。

私下地、保密地

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

他私下告訴我他要辭掉這份工作。