"melancholic" in the noun sense
1. melancholic, melancholiac
someone subject to melancholia
"melancholic" in the adjective sense
1. melancholy, melancholic
characterized by or causing or expressing sadness
"growing more melancholy every hour"
"her melancholic smile"
"we acquainted him with the melancholy truth"
Source: WordNet® (An amazing lexical database of English)
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