shitty vs unfun

shitty

adj
  • Annoyed. 

  • Covered in faeces/feces; feculent. 

  • Of low quality or standard; inferior; not up to par, or failing one's expectations 

  • Under the influence of illicit drugs or alcohol; drunk; high. 

  • Very bad; unpleasant; miserable; insignificant. 

unfun

adj
  • Not fun. 

noun
  • Lack or absence of fun; funlessness. 

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