1. a gloomy state of mind, esp. when habitual or prolonged; depression.
2. sober thoughtfulness; pensiveness.
a. the condition of having too much black bile, considered in ancient and medieval medicine to cause gloominess and depression.
b. black bile.
4. affected with, characterized by, or showing melancholy; mournful; depressed: a melancholy mood.
5. causing melancholy or sadness; saddening: a melancholy occasion.
6. soberly thoughtful; pensive.
The word melancholy is used both as a noun and adjective and you can use the word for a very deep feeling of sadness. Usually the word is used for a kind of sadness the reason of which is hard to explain and the feeling also lasts a long time. As an adjective the word can describe anything that makes you feel sad and you can use the terms melancholy thoughts and melencholy memories to describe sad thoughts and memories respectively.
I am not trying to make the impression that I am sad all the time but haunting thoughts from the past do drift across my memories, and some have left a deep impact on me. I am sure there are others out there that have the same thing happen to them. Even the word melancholy is sad sounding.
I think we regret things we have done and would like to relive them, perhaps we also would change some things. I think I mostly regret having to make the decision to have my pets put to sleep, it makes me feel like an executioner, I really hate that feeling. Perhaps this crappy weather we are having has made me feel melancholy.
I would like to hear what my friends think about this word, we have all experienced this feeling. I don't think melancholy is the same as depression, once I read about depression. The book said if you can resound from your feelings and not dwell on them, then you are not sick with a long term depression. I hope I remembered it right, it was something like that. I know one thing that keeps me happy is visiting all you friends.