fluency
noun /ˈfluːənsi/
  /ˈfluːənsi/
 [uncountable, singular]- the quality of being able to speak or write a language, especially a foreign language, easily and well
- Fluency in French is required for this job.
 - to build up a fluency in written and spoken English
 - Some young children achieve great fluency in their reading.
 
Oxford Collocations Dictionaryadjective- oral
 - verbal
 - reading
 - …
 
- achieve
 - acquire
 - develop
 - …
 
- fluency in
 
 - the quality of doing something in a way that is smooth and shows skill
- The team lacked fluency during the first half.
 
 
Word Originearly 17th cent.: from Latin fluentia, from fluere ‘to flow’.