Suffering from ennui is a state of being BORED, listless, and lacking in enthusiasm. It is derived from the French word for 'BOREDOM' and is often used to describe a feeling of apathy or dissatisfaction with life. The term can be used to describe a person who is feeling uninterested in their current situation or activities. In the crossword, the solution for suffering from ennui is 'BORED, ' which is an accurate description of the feeling.