daunting vs unfun

daunting

noun
  • The act of discouraging or intimidating; discouragement, intimidation. 

  • The act of defeating, overcoming, or overwhelming. 

adj
  • Appearing to be difficult; challenging. 

  • Intimidatingly impressive; awe-inspiring, overwhelming. 

  • Discouraging; inspiring fear. 

unfun

noun
  • Lack or absence of fun; funlessness. 

adj
  • Not fun. 

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