delightful vs hellacious

delightful

adj
  • Pleasant; pleasing, bringing enjoyment, satisfaction, or pleasure. 

hellacious

adj
  • nasty, repellent. 

  • Remarkable, unbelievable, unusual. 

  • horrible, awful, hellish, agonizing 

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