Existential fatigue, also known as ENNUI (5 letters), is a state of mental and emotional exhaustion caused by a lack of meaning or purpose in life. It is characterized by feelings of apathy, boredom, and depression. It can be caused by a variety of factors, including a lack of direction, a lack of motivation, or a lack of connection to others. It can also be caused by a feeling of being overwhelmed by the world around us. Existential fatigue can lead to a decrease in productivity, an increase in stress, and a decrease in overall quality of life.