Open-heartedness is a trait associated with empathy, kindness, and positive behavior. Some synonyms for open-heartedness include generosity, compassion, warmth, and sincerity. Generosity refers to a willingness to give and be generous towards others, while compassion is the ability to feel and understand the pain of others. Warmth is characterized by friendliness and approachability while sincerity is the authenticity of being who you are. Other synonyms for open-heartedness include benevolence, humanity, magnanimity, and unselfishness. These words all describe a positive quality of character and reflect traits that help people form positive relationships with one another.