despicable vs unserious

despicable

adj
  • Fit or deserving to be despised; contemptible; mean. 

noun
  • A wretched or wicked person. 

unserious

adj
  • Not serious; characterized by a lack of seriousness (of attitude, approach, style etc.). 

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