compunction
n. 悔恨,后悔;内疚
例句
He had lied to her without compunction.
他向她撒了谎却毫无愧疚。
《牛津词典》
She felt no compunction about leaving her job.
她对自己的辞职一点儿也不感到懊悔。
He has no compunction about relating how he killed his father.
他毫无悔意地讲述了他如何杀死自己的父亲。
《柯林斯英汉双解大词典》