Competence in language (7)

I believe the answer is:

fluency

(Other definitions for fluency that I've seen before include "Articulateness" , "Slickness" , "Volubility" , "Facility in speech or writing" , "Ease of speaking a language" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.