badmouth vs opprobriate

badmouth

verb
  • To criticize or malign, especially unfairly or spitefully. 

opprobriate

verb
  • To express opprobrium for or to view with opprobrium; to scorn. 

adj
  • Expressing opprobrium; disparaging. 

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