melancholy vs unfunny

melancholy

noun

  • Great sadness or depression, especially of a thoughtful or introspective nature. 

  • Black bile, formerly thought to be one of the four "cardinal humours" of animal bodies. 

adj

  • Affected with great sadness or depression. 

unfunny

adj

  • Not funny, especially when attempting to be. 

How often have the words melancholy and unfunny occurred in a corpus of books? (source: Google Ngram Viewer )