boisterous vs unfun

boisterous

adj
  • Having or resembling animal exuberance. 

  • Full of energy; exuberant; noisy. 

  • Characterized by violence and agitation; wild; stormy. 

unfun

adj
  • Not fun. 

noun
  • Lack or absence of fun; funlessness. 

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