Comparative form of courtly; more courtly, refined, elegant, or befitting court life; more characteristic of a royal court or courtiers.
From 'courtly' (adjective meaning refined, elegant, befitting a court) + the comparative suffix '-er,' used to compare two things (courtly vs. courtlier).
The comparative 'courtlier' suggests a hierarchy of refinement—you could be courtly, but your rival could be 'courtlier,' meaning they mastered the art of court elegance even better than you did!
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