fluency

noun4

1. •
   The quality of being fluent in a language; a person's command of a particular language.
2. •
   The inherent ability to use a language easily and accurately.
3. •
   The quality of consistently applying skill correctly in the manner of one well-practiced at it, requiring little deliberate thought to perform without mistakes

   • While Gunners boss Arsene Wenger had warned his players against letting the pre-match festivities distract them from the task at hand, they clearly struggled for fluency early on. — 2011
4. •
   The quality of smoothness of flow.

   • She has fluency, nobility, / Elegance and symmetry, / Stability, fluidity, / Like poetry in motion. — 1996