unfun vs wan

unfun

adj

  • Not fun. 

noun

  • Lack or absence of fun; funlessness. 

wan

adj

  • Bland, uninterested. 

  • Pale, sickly-looking. 

  • Dim, faint. 

noun

  • The quality of being wan; wanness. 

  • A girl or woman. 

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