a feeling of remorse or guilt
compunction - remorse
The formal word ‘compunction’ expresses a feeling that you should not do or say something because it is wrong or could cause offence. However, the term is most commonly used in the negative to describe a lack of shame or guilt, such as in the phrases ‘no compunction’, ‘any compunction’, or 'without compunction'.
If Andrew continues to under perform, even after receiving an official warning, I would have no compunction about firing him.
Even though I consider Jane to be a good friend, I didn’t feel any compunction about taking over her position after she was demoted.
That political group continue to disobey the law without compunction. More should be done to hold them to account for their actions.