noun (n)

• skillful performance or ability without difficulty

  terampil prestasi atau kemampuan tanpa kepayahan

  Synonym:
  adeptness, deftness, facility, quickness
  

  source: wordnet30
• The quality of being adroit; skill and readiness; dexterity.

  kualiti menjadi gesit; keterampilan dan berwaspada; ketangkasan.

  source: webster1913