definition of
quickness

[1] #1 quickness n. [adeptness, adroitness, deftness, facility] skillful performance or ability without difficulty; "his quick adeptness was a product of good design"; "he was famous for his facility as an archer". wn

[2] #2 quickness n. [mental quickness, quick-wittedness] intelligence as revealed by an ability to give correct responses without delay. wn

[3] #3 quickness n. [celerity, rapidity, rapidness, speediness] a rate that is rapid. wn