Main entry: quickness, rapidity, rapidness, speediness, celerity
Definition: a rate that is rapid
Main entry: mental quickness, quick-wittedness, quickness
Definition: intelligence as revealed by an ability to give correct responses without delay
Main entry: deftness, facility, quickness, adeptness, adroitness
Definition: skillful performance or ability without difficulty
Usage: his quick adeptness was a product of good design; he was famous for his facility as an archer