1. (noun)adeptness, adroitness, deftness, facility, quickness skillful performance or ability without difficulty "his quick adeptness was a product of good design"; "he was famous for his facility as an archer"
2. (noun)mental quickness, quickness, quick-wittedness intelligence as revealed by an ability to give correct responses without delay
3. (noun)celerity, quickness, rapidity, rapidness, speediness a rate that is rapid