Guilt is a moral emotion that occurs when a person believes or realizes—accurately or not—that they have compromised their own standards of conduct or have violated universal moral standards and bear significant responsibility for that violation. Guilt is closely related to the concept of remorse, regret, as well as shame.

Remorse is a distressing emotion experienced by an individual who regrets actions which they have done in the past that they deem to be shameful, hurtful, or wrong. Remorse is closely allied to guilt and self-directed resentment. When a person regrets an earlier action or failure to act, it may be because of remorse or in response to various other consequences, including being punished for the act or omission. People may express remorse through apologies, trying to repair the damage they've caused, or self-imposed punishments.