The Collaborative International Dictionary of English v.0.48:
Deftness \Deft"ness\, n. The quality of being deft. --Drayton. [1913 Webster]WordNet (r) 3.0 (2006):
deftness n 1: skillful performance or ability without difficulty; "his quick adeptness was a product of good design"; "he was famous for his facility as an archer" [syn: adeptness, adroitness, deftness, facility, quickness]