MELANCHOLIC
melancholy, melancholic
(adjective) characterized by or causing or expressing sadness; “growing more melancholy every hour”; “her melancholic smile”; “we acquainted him with the melancholy truth”
melancholic, melancholiac
(noun) someone subject to melancholia
Source: WordNet® 3.1
Etymology
Adjective
melancholic (comparative more melancholic, superlative most melancholic)
Filled with or affected by melancholy—great sadness or depression, especially of a thoughtful or introspective nature.
Noun
melancholic (plural melancholics)
A person who is habitually melancholy.
Source: Wiktionary
Mel"an*chol`ic, a. Etym: [L. melancholicus, Gr. mélancholique.]
Definition: Given to melancholy; depressed; melancholy; dejected; unhappy.
Just as the melancholic eye Sees fleets and armies in the sky. Prior.
Mel"an*chol`ic, n. [Obs.]
1. One affected with a gloomy state of mind. J. Spenser.
2. A gloomy state of mind; melancholy. Clarendon.
Source: Webster’s Unabridged Dictionary 1913 Edition