We experience guilt when we feel responsible for expectations that are not met. We may have said or done something intentionally or unintentionally that harmed someone else. Guilt is asking us to right the wrong.
Guilt is not so much an emotion as a state of being. You are either guilty or not guilty of something. Our response to that guilt can be a range of emotion such as fear, anger, sadness, regret, confusion, defensiveness, embarrassment, remorse and more.