Contentment
Humans and many other mammals feel satisfaction. Sometimes a person lacks satisfaction. They may feel negative feelings such as discontent, emptiness, boredom or sadness. This is the opposite of satisfaction. It is called dissatisfaction. Dissatisfaction occurs when we fail at doing something many times. Dissatisfaction occurs when comparing yourself to another person. This is called social comparison theory. Ongoing dissatisfaction causes complacency, apathy and even depression.