skill + -ful

(also mainly British skilful)

having or showing skill:

〈人が〉 «…(するの)に» 熟練した, 上手な «at, with, in» ; 〈仕事などが〉熟練を要する

e.g. a skillful infielder

e.g. his skillful use of propaganda.

skillfulness |ˈskilfəlnəs| (also mainly British skilfulness) noun