confidently
adv. 自信地；安心地
例句
You must act boldly and confidently.
你必须表现得大胆、自信。
《柯林斯英汉双解大词典》
She walked confidently across the hall.
她自信地走过大厅。
She played the piano confidently but her timing was not good.
她钢琴弹得很自信，但是节奏掌握得不好。
《牛津词典》
