The term "guilt complex" is commonly used to describe an intense feeling of guilt or shame that an individual experiences due to a particular action, thought or situation. However, there are numerous synonyms that can help to express this emotion more precisely. Some examples of these synonyms include remorse, regret, self-condemnation, self-blame, self-reproach, and self-hatred. Each of these words may have slightly different connotations, but they all refer to a strong negative emotional response that someone feels towards their own actions or thoughts. By using these synonyms, individuals can communicate their feelings in a more nuanced and specific way.