The word "resent" means to be angry or feel annoyance toward someone or about something. Often, resentment is felt when a person believes another individual or a situation is unfair.
Resentment is a strong emotion that results from different situations. For example, when a person believes they have been embarrassed or done wrong by another person, feelings such as injustice take hold that can turn into resentment.
While the causes of resentment are vast, some include emotional rejection, betrayal or belittlement. Resentment does not have physical characteristics so it is often expressed in the form of anger or envy. Unresolved resentment has a profound negative effect on people as it can impact relationships, emotional growth and intimacy. Resentment is often strongest when a person feels betrayed or abandoned by someone they are close to.