信心用英语怎么说

信心的英文是"confidence"。这个词源于拉丁文"confidere"，意思是"to trust, to have faith in"。例句：
I have confidence in myself and my abilities. 我对自己和自己的能力有信心。
She exudes confidence when she speaks in public. 她在公众面前讲话时充满信心。
His lack of confidence held him back from reaching his full potential. 他缺乏信心阻碍了他发挥潜能。
希望这些例句对你有帮助。