mulish vs reasonable

mulish

adj
  • Characteristic of a mule; stubborn, obstinate, or intractable 

reasonable

adj
  • Just; fair; agreeable to reason. 

  • Satisfactory. 

  • Not excessive or immoderate; within due limits; proper. 

  • Not expensive; fairly priced. 

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