trying vs unfun

trying

adj
  • Irritating, stressful or bothersome. 

  • Difficult to endure; arduous. 

noun
  • The act by which one tries something; an attempt. 

unfun

adj
  • Not fun. 

noun
  • Lack or absence of fun; funlessness. 

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