Melancholy

1. A gloomy state of mind, esp. when habitual or prolonged; depression.
2. Sober thoughtfulness; pensiveness.
3. Affected with, characterized by, or showing melancholy; mournful; depressed: a melancholy mood.
4. Causing melancholy or sadness; saddening: a melancholy occasion.
5. Soberly thoughtful; pensive.

Thomas.