Neuroticism is one of the Big Five personality factors. Learn about what it means to have a neurotic personality and how this trait might impact your relationships. Neuroticism is a personality trait that causes emotional instability and negative feelings. You may have outbursts of anxiety, irritability, or anger. Neuroticism refers to a broad personality trait that allows a person to experience several anxious and negative emotions. It is one of the five personality traits of the ‘Big Five Personality Theory’ along with Extroversion, Openness, Conscientiousness, and Agreeableness. What Is Neuroticism? Neuroticism is a human personality trait usually defined as a tendency toward negative feelings and emotions. In psychology and development, it is a significant personality trait that can be ... Neuroticism is a personality trait that reflects a tendency toward negative emotions, such as anxiety, depression, and self-doubt. Learn how to assess, cope with, and change your level of neuroticism, and how it affects your mental health and well-being.