debonair vs underbred

debonair

adj
  • Charming, confident, and carefully dressed. 

  • Suave, urbane and sophisticated. 

underbred

adj
  • Not purebred; of an inferior strain. 

  • Of inferior breeding or upbringing; vulgar, lacking in manners or finesse. 

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