cruddy vs unfun

cruddy

adj
  • Crummy, lousy, worthless. 

  • Annoying, irritating. 

  • Full of crud. 

unfun

adj
  • Not fun. 

noun
  • Lack or absence of fun; funlessness. 

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