Bitterness is a strong, unpleasant taste often associated with certain foods and drinks, such as dark chocolate, coffee, and some vegetables like kale. It can also refer to a feeling of resentment or anger that arises from perceived unfair treatment or disappointment. This emotional bitterness can affect relationships and overall well-being. In the context of psychology, bitterness can be seen as a response to unresolved conflicts or grievances. It may lead to negative thoughts and behaviors, impacting mental health. Addressing bitterness often involves forgiveness and finding ways to cope with past experiences, promoting emotional healing and personal growth.