indelicate vs unfun

indelicate

adj

  • Coarse or tasteless. 

  • Tactless or undiplomatic. 

  • Improper or immodest. 

unfun

adj

  • Not fun. 

noun

  • Lack or absence of fun; funlessness. 

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