downright vs thorough

downright

adj
  • Complete; absolute 

  • Directly to the point; plain 

  • Using plain direct language; accustomed to express opinions directly and bluntly; blunt. 

adv
  • Really; actually; quite 

thorough

adj
  • Utter; complete; absolute. 

  • Painstaking and careful not to miss or omit any detail. 

noun
  • A furrow between two ridges, to drain off the surface water. 

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