mel⋅an⋅chol⋅y 
�noun 1. a gloomy state of mind, esp. when habitual or prolonged; depression.
2. sober thoughtfulness; pensiveness.
3. Archaic. a. the condition of having too much black bile, considered in ancient and medieval medicine to cause gloominess and depression.
b. black bile.

�adjective 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.

Synonyms:
1. sadness, dejection, despondency. 2. seriousness. 4. gloomy, despondent, blue, dispirited, sorrowful, dismal, doleful, glum, downcast. 6. serious.

Antonyms:
1. cheer, happiness. 5. happy.

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nos⋅tal⋅gia   
�noun 1. a wistful desire to return in thought or in fact to a former time in one's life, to one's home or homeland, or to one's family and friends; a sentimental yearning for the happiness of a former place or time: a nostalgia for his college days.
2. something that elicits or displays nostalgia.

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