The term "un-happiness" is often used to describe a state of mind that is characterized by feelings of sadness, depression, or despair. However, there are several antonyms to this term that can be used to describe the opposite state of mind. These include happiness, contentment, joy, satisfaction, and pleasure. Happiness is the most commonly used antonym for un-happiness, and it refers to a state of mind that is characterized by positive emotions such as joy, laughter, and optimism. Contentment, on the other hand, is a feeling of satisfaction and ease that comes from being comfortable with one's life. Joy refers to a feeling of great happiness or excitement, while satisfaction and pleasure are both feelings of enjoyment and fulfillment that come from achieving something or experiencing something positive.