Regretting is an emotion that is often associated with sadness and remorse. GRIEVING, which has 8 letters, is a deep sorrow that is usually felt after the loss of a loved one. CRYING, which has 6 letters, is an outward expression of sadness or distress. SORRY, which has 5 letters, is an expression of regret or remorse for something done wrong. RUING, which also has 5 letters, is to feel deep regret or sorrow for something that has happened. All of these words are related to the term regretting, which is an emotion of deep sorrow or remorse for something that has happened.