courtly vs unmannered

courtly

adj
  • Befitting of a royal court; reflecting the manners or behaviour of people at court. 

  • Of or relating to a royal court. 

adv
  • In the manner of a royal court; in a manner befitting of a royal court. 

unmannered

adj
  • Having poor manners or social skills; ill-mannered; rude. 

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